Network security
Enterprise cyberdefense strategies must include network security best practices. Get advice on essential network security topics such as remote access, VPNs, zero-trust security, NDR, endpoint management, IoT security, hybrid security, Secure Access Service Edge, mobile security and more.
Top Stories
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News
24 Jan 2025
DOJ indicts 5 individuals in North Korea IT worker scam
An unsealed indictment revealed threat actors working for North Korea tricked at least 64 U.S. businesses into hiring fake IT workers for financial and propriety data gains. Continue Reading
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News
23 Jan 2025
Zero-day vulnerability in SonicWall SMA series under attack
SonicWall released a hotfix for a critical pre-authentication remote code execution vulnerability in Secure Mobile Access 1000 products amidst reports of zero-day exploitation. Continue Reading
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Tip
01 Jun 2022
How zero trust unifies network virtualization
The combination of zero trust and network virtualization creates opportunities to strengthen security policies, increase cross-domain collaboration and improve overall visibility. Continue Reading
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Feature
01 Jun 2022
Implementing wireless security in the enterprise
Learn how to properly secure your enterprise wireless network while considering UX, zero trust and commonly overlooked architectural mistakes. Continue Reading
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Feature
01 Jun 2022
How to design architecture for enterprise wireless security
Learn about a five-phase design methodology that will help your company plan for and create an enterprise wireless security architecture. Continue Reading
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News
25 May 2022
Verizon DBIR: Stolen credentials led to nearly 50% of attacks
The Verizon 2022 Data Breach Investigations Report revealed enterprises' ongoing struggle with securing credentials and avoiding common mistakes such as misconfigurations. Continue Reading
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News
24 May 2022
Verizon DBIR: Ransomware dominated threat landscape in 2021
Though ransomware became an increasingly large threat to enterprises last year, Verizon's Data Breach Investigations Report found the model may not be as profitable as expected. Continue Reading
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News
18 May 2022
CISA calls out security misconfigurations, common mistakes
Poor security practices and misconfigured controls are allowing threat actors to compromise enterprise networks. Continue Reading
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Definition
17 May 2022
man in the browser (MitB)
Man in the browser (MitB) is a security attack where the perpetrator installs a Trojan horse on the victim's computer that is capable of modifying that user's web transactions. Continue Reading
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News
16 May 2022
Critical bug in Zyxel firewalls, VPNs exploited in the wild
Initially discovered by Rapid7, the vulnerability poses a critical risk to enterprise networks and could allow attackers to gain remote access to Zyxel security products. Continue Reading
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Definition
16 May 2022
SWIFT FIN message
SWIFT FIN is a message type (MT) that transmits financial information from one financial institution to another. Continue Reading
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Answer
12 May 2022
Zero trust vs. zero-knowledge proof: What's the difference?
Zero-knowledge proofs can help companies implement a zero-trust framework. Learn about the two concepts and how they come together to better secure networks. Continue Reading
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News
11 May 2022
Critical F5 vulnerability under exploitation in the wild
A remote code vulnerability in F5 BIG-IP network appliances is now being scanned for by threat actors, and some experts have observed exploitation in the wild. Continue Reading
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News
11 May 2022
US, allies warn of nation-state attacks against MSPs
The joint advisory did not name any specific nation-states, though co-sponsor agencies expect threat actors to 'step up their targeting' of managed service providers (MSPs). Continue Reading
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News
10 May 2022
US, EU attribute Viasat hack to Russia
The U.S. and U.K. governments, along with the EU, confirmed the suspicions around the attack that disrupted satellite services for customers in Ukraine as Russia invaded the country. Continue Reading
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Definition
04 May 2022
SYN flood attack
A SYN flood attack is a type of denial-of-service (DoS) attack on a computer server. Continue Reading
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News
03 May 2022
Trend Micro discovers AvosLocker can disable antivirus software
AvosLocker operators are using legitimate tools and previously disclosed vulnerabilities to disable antivirus software and evade detection on infected machines. Continue Reading
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News
03 May 2022
RCE vulnerabilities found in Avaya, Aruba network switches
Armis told SearchSecurity that depending on device model, it was 'not too hard to develop an exploit' for the Avaya and Aruba flaws, heightening concern for administrators. Continue Reading
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News
02 May 2022
Cyberespionage group exploiting network and IoT blind spots
Researchers with Mandiant have uncovered a new espionage-focused hacking operation that takes advantage of IoT and networking gear that security tools don't cover. Continue Reading
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Definition
28 Apr 2022
Sender Policy Framework (SPF)
Sender Policy Framework (SPF) is a protocol designed to restrict who can use an organization's domain as the source of an email message. Continue Reading
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News
27 Apr 2022
REvil ransomware attacks resume, but operators are unknown
The notorious REvil ransomware gang appears to be up and running once more, as new attacks and malware samples have been observed, but it's unclear who is behind the operation. Continue Reading
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News
26 Apr 2022
Cisco Talos observes 'novel increase' in APT activity in Q1
The security vendor uncovered new trends during Q1, including increased APT attacks, 'democratized' ransomware threats and significant exploitation of Log4j bugs. Continue Reading
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Answer
25 Apr 2022
What are the benefits and challenges of microsegmentation?
Administrators are assessing microsegmentation to beef up access control and security. But deploying microsegmentation can be complex. Continue Reading
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News
25 Apr 2022
LemonDuck botnet evades detection in cryptomining attacks
While the botnet is not new, it appears operators are honing their skills and evading Alibaba Cloud's monitoring service to take advantage of rising cryptocurrency prices. Continue Reading
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News
21 Apr 2022
Cryptocurrency theft leaves Beanstalk Farms' future in doubt
Beanstalk Farms' founders confirmed they found many aspects of activity during the attack 'strange' but saw no reason for concern. Now, the company's future is uncertain. Continue Reading
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Answer
21 Apr 2022
Comparing network segmentation vs. microsegmentation
Network segmentation and microsegmentation both control access but vary in how they do it, as well as how granular their approach is. Learn the differences here. Continue Reading
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News
20 Apr 2022
U.S. warns of 'increased' threats from Russian hacking groups
The U.S. government and its Five Eyes intelligence partners issued a joint advisory warning of the dangers posed by both state-sponsored hackers and cybercriminal crews in Russia. Continue Reading
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News
20 Apr 2022
Kaspersky releases decryptor for Yanluowang ransomware
Kaspersky is offering users and admins a tool to decrypt data that had been locked away by the emerging Yanluowang ransomware gang, which was first revealed in December. Continue Reading
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News
18 Apr 2022
Pegasus spyware discovered on U.K. government networks
Citizen Lab confirmed it spotted the notorious spyware running on systems within the U.K. prime minister's office, and it believes the United Arab Emirates is to blame. Continue Reading
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News
18 Apr 2022
Attack on Beanstalk Farms results in $182M loss
High payouts and security weaknesses make cryptocurrency a growing target, which was highlighted even further in the latest attack involving virtual currency and a DeFi platform. Continue Reading
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News
14 Apr 2022
Critical Windows RPC vulnerability raises alarm
Security experts warn that a newly disclosed vulnerability in a critical Windows networking component is opening the door for remote takeover attacks. Continue Reading
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News
14 Apr 2022
US government, security vendors warn of new ICS malware
As attacks on critical infrastructure increase, experts warn that threat actors have developed new malware designed to take control of ICS and SCADA systems in the energy sector. Continue Reading
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News
13 Apr 2022
Microsoft dismantles ZLoader botnet
Microsoft and ESET security teams explained how they were able to identify and dismantle the command and control infrastructure of the notorious ZLoader malware network. Continue Reading
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News
13 Apr 2022
Sophos: LockBit affiliates hacked regional government agency
Sophos said attackers spent at least five months inside an unnamed regional government agency's network, remotely Googling for hacking tools before deploying LockBit ransomware. Continue Reading
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News
12 Apr 2022
Ukraine energy grid hit by Russian Industroyer2 malware
The 2016 malware known as 'Industroyer' has resurfaced in a new series of targeted attacks against industrial controller hardware at a Ukraine power company. Continue Reading
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News
12 Apr 2022
Synopsys: Enterprises struggling with open source software
To curb open source risk, Synopsys advises enterprises to keep a comprehensive inventory of all software within its environment and to understand that securing open source requires strong management. Continue Reading
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News
12 Apr 2022
Law enforcement takedowns continue with RaidForums seizure
The hacker forum, which used to sell and purchase sensitive information including login credentials, has been dismantled, and its alleged founder was arrested and indicted. Continue Reading
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News
08 Apr 2022
Fortinet, Cato Networks add security for distributed SD-WANs
Fortinet updated FortiOS with an inline sandbox and a cloud access security broker. Cato has added new network access controls to its SASE service. Continue Reading
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News
07 Apr 2022
How the FBI took down the Cyclops Blink botnet
The FBI's operation copied and removed Cyclops Blink's malware from victims' systems that were used as command and control devices, severing Sandworm's control of the botnet. Continue Reading
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Definition
07 Apr 2022
Open System Authentication (OSA)
Open System Authentication (OSA) is a process by which a computer could gain access to a wireless network that uses the Wired Equivalent Privacy (WEP) protocol. Continue Reading
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News
06 Apr 2022
US sanctions Garantex for laundering over $100M
The latest action follows a string of sanctions imposed during the past year against cryptocurrency exchanges operating out of Russia. Continue Reading
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News
06 Apr 2022
Conti ransomware leaks show a low-tech but effective model
The Conti ransomware gang runs largely on elbow grease, according to Akamai security researchers who analyzed the group's training materials and operating policies. Continue Reading
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Definition
06 Apr 2022
AAA server (authentication, authorization and accounting)
An AAA server is a server program that handles user requests for access to computer resources and, for an enterprise, provides authentication, authorization and accounting (AAA) services. Continue Reading
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Definition
04 Apr 2022
Luhn algorithm (modulus 10)
The Luhn algorithm, also called modulus 10 or modulus 10 algorithm, is a simple mathematical formula used to validate a user's identification numbers. Continue Reading
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Tip
01 Apr 2022
The pros and cons of Netskope SASE
Netskope is undoubtedly a leader in the CASB market, but its limited security capabilities and lack of SD-WAN make Netskope an incomplete SASE offering. Continue Reading
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News
31 Mar 2022
New 'AcidRain' malware may be connected to Viasat attack
SentinelOne did not directly attribute the malware to the Viasat attack. That said, researchers argued the "AcidRain" malware's functionality matches open source intelligence. Continue Reading
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News
30 Mar 2022
Viasat confirms cyber attack on Ukraine customers
The U.S.-based satellite internet provider said a 'multifaceted and deliberate cyber attack' struck Viasat's KA-SAT network on the first day of Russia's invasion of Ukraine. Continue Reading
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Tip
29 Mar 2022
How to put cybersecurity sustainability into practice
Cybersecurity sustainability practices involve mitigating cyber-risk without burning out people -- or burning through resources. Explore what that looks like on the ground. Continue Reading
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News
25 Mar 2022
US indicts Russian nationals for critical infrastructure attacks
One defendant is accused of deploying the infamous Trisis or Triton malware against energy-sector companies, including a petrochemical plant in Saudi Arabia in a 2017 attack. Continue Reading
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Feature
24 Mar 2022
SecOps and cybersecurity basics for NetOps teams
To bridge the gap between NetOps and SecOps teams, network pros should know security fundamentals, including different types of attackers, attacks and available security services. Continue Reading
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News
22 Mar 2022
F-Secure splits in two as WithSecure launches
The Finnish security vendor's enterprise business sets off on its own as a new brand called WithSecure, while F-Secure will continue to operate the consumer side of the business. Continue Reading
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News
22 Mar 2022
STG launches Skyhigh Security from McAfee cloud assets
The new company combines the McAfee Enterprise Security Service Edge portfolio with a name reminiscent of a previous McAfee acquisition: Skyhigh Networks. Continue Reading
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News
17 Mar 2022
Sandworm APT ramps up Cyclops Blink botnet with Asus routers
Trend Micro discovered that the Cyclops Blink botnet, which had originally targeted WatchGuard devices, is now spreading to Asus and 'at least one other vendor.' Continue Reading
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News
16 Mar 2022
LokiLocker ransomware crew bursts onto the scene
The mysterious LokiLocker ransomware group caught the attention of BlackBerry researchers, who say the outfit could become the next cybercrime group to menace enterprises. Continue Reading
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Tip
16 Mar 2022
3 benefits of sustainable cybersecurity in the enterprise
Sustainable cybersecurity means taking the long view on cyber-risk mitigation. Explore the technical, financial, societal and reputational wins it can net for the enterprise. Continue Reading
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Tip
15 Mar 2022
How to secure NetOps initiatives using Agile methodology
As more NetOps teams implement Agile methods, network and security testing must be part of a holistic approach that involves developers, networking and security teams working together. Continue Reading
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Definition
11 Mar 2022
screened subnet
A screened subnet, or triple-homed firewall, refers to a network architecture where a single firewall is used with three network interfaces. Continue Reading
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News
10 Mar 2022
Log4Shell vulnerability continues to menace developers
Months after it was first disclosed, the Log4j RCE vulnerability remains widespread on code-sharing sites and open source repositories, according to security researchers. Continue Reading
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Answer
10 Mar 2022
Use microsegmentation to mitigate lateral attacks
Attackers will get into a company's system sooner or later. Limit their potential damage by isolating zones with microsegmentation to prevent lateral movement. Continue Reading
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News
09 Mar 2022
Researchers disclose new Spectre V2 vulnerabilities
The Spectre class of data disclosure vulnerabilities is once again at the security forefront after researchers discovered a new variant of the side-channel attack. Continue Reading
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News
08 Mar 2022
Researchers uncover vulnerabilities in APC Smart-UPS devices
Researchers with Armis found a trio of vulnerabilities in uninterruptible power supply (UPS) devices from APC that could be remotely exploited by threat actors. Continue Reading
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News
01 Mar 2022
Nvidia confirms breach, proprietary data leaked online
Nvidia has confirmed some of the claims from a little-known ransomware gang that allegedly broke into the network of the GPU giant and stole corporate data. Continue Reading
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News
25 Feb 2022
Arista embeds security software in campus switches
Arista Networks will embed network detection and response software in campus switches to provide AI-driven threat detection across the network. Continue Reading
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News
25 Feb 2022
Researchers find access brokers focused on US targets
Security vendors studied 'access broker' advertisements on the dark web, which provide ransomware groups with the network and system access required for data thefts. Continue Reading
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Tip
25 Feb 2022
A review of Zscaler SASE architecture
Zscaler has a strong cloud-native architecture for secure internet access. But it doesn't deliver SD-WAN or converge internet access and WAN security, leaving it with only part of a SASE platform. Continue Reading
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Tip
23 Feb 2022
How to use PKI to secure remote network access
Public key infrastructure is a more secure option than password-based or multifactor authentication. Learn how those benefits can extend to remote employees and access. Continue Reading
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News
23 Feb 2022
IBM: REvil dominated ransomware activity in 2021
IBM X-Force's Threat Intelligence Index report also found a 'triple extortion' ransomware tactic in 2021, where threat actors use DDoS attacks to put extra pressure on victims. Continue Reading
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News
17 Feb 2022
SonicWall: Ransomware attacks increased 105% in 2021
While 2021 represented a turning point for law enforcement and government action against ransomware, SonicWall still observed massive growth in attacks. Continue Reading
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News
15 Feb 2022
Juniper acquires zero-trust security startup WiteSand
Juniper has acquired zero-trust security company WiteSand. The startup's cloud-native technology could find a home in Juniper's Mist and SASE platforms. Continue Reading
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News
15 Feb 2022
CrowdStrike: Attackers are moving faster, harder to detect
The CrowdStrike '2022 Global Threat Report' said attackers are getting better at exploiting vulnerabilities and moving through compromised networks before defenders can spot them. Continue Reading
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News
09 Feb 2022
Palo Alto announces ML-enabled software update and firewalls
Palo Alto's updated PAN-OS software uses machine learning to analyze network traffic in real time, and two firewall appliances provide the processing power to support it. Continue Reading
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Guest Post
09 Feb 2022
How automated certificate management helps retain IT talent
Organizations shouldn't waste their IT pros' time on unnecessary tasks -- especially during a skills shortage. Learn about the benefits of automated digital certificate management. Continue Reading
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News
01 Feb 2022
Iranian hacking groups pick up the pace with new attacks
Two security vendors are reporting a fresh wave of targeted attacks and malware outbreaks believed to be the work of Iranian state-sponsored threat groups. Continue Reading
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Feature
31 Jan 2022
Edge, public cloud, security drive network transformation
Networking is starting to reflect innovations in compute and public cloud. A notable change will be how network teams view networking and security as a holistic platform. Continue Reading
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Feature
31 Jan 2022
Include defensive security in your cybersecurity strategy
Is your company's cybersecurity strategy comprehensive enough to protect against an expanding threat landscape? Learn how developing defensive security strategies can help. Continue Reading
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Feature
27 Jan 2022
Log4j explained: Everything you need to know
Log4j, which is embedded in popular services and frameworks, became a headache for many businesses by the end of 2021. Businesses affected include Apple, Microsoft and VMware. Continue Reading
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Definition
27 Jan 2022
one-time pad
In cryptography, a one-time pad is a system in which a randomly generated private key is used only once to encrypt a message that is then decrypted by the receiver using a matching one-time pad and key. Continue Reading
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Tip
26 Jan 2022
Integrating zero-trust practices into private 5G networks
One of the first steps in deploying a technology is protecting it from potential security threats. Learn how to secure a private 5G network with zero-trust security practices. Continue Reading
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Tip
20 Jan 2022
Introduction to automated penetration testing
Automated penetration testing, which speeds up the process for companies and vendors, is maturing. Is it ready to close the time gap between vulnerability discovery and mitigation? Continue Reading
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News
20 Jan 2022
Cisco: Patching bugs is about more than CVSS numbers
Cisco's Kenna Security advised enterprises to consider more than just CVSS scores and update advisories when deciding when and how to address security vulnerabilities. Continue Reading
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News
19 Jan 2022
FireEye, McAfee Enterprise relaunch as XDR-focused Trellix
Though the new company is a combination of two high-profile security vendors, private equity firm STG relaunched the merger under an entirely different name. Continue Reading
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Tip
18 Jan 2022
How to implement network segmentation for better security
For a network segmentation strategy to be effective and improve security, network teams need to create detailed security policies, identify each resource and use allowlists. Continue Reading
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News
13 Jan 2022
Ukrainian police bust unnamed ransomware gang
A law enforcement raid in Ukraine resulted in the arrest of five suspects accused of deploying ransomware through phishing emails and making more than $1 million. Continue Reading
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News
11 Jan 2022
SonicWall SMA 100 appliances beset by multiple vulnerabilities
SonicWall's security appliances can be compromised by several attacks on five vulnerabilities, including one remote code execution bug, according to Rapid7. Continue Reading
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News
11 Jan 2022
NetUSB flaw could impact millions of routers
SentinelOne researcher Max Van Amerongen said the only way to fix the high-severity vulnerability is to update the router firmware, which can be a difficult process. Continue Reading
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Feature
04 Jan 2022
Is quantum computing ready to disrupt cybersecurity?
Quantum computing isn't here yet, but now is the time for companies to start considering how it may affect their business -- both negatively and positively -- in the next decade. Continue Reading
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Definition
04 Jan 2022
access log
An access log is a list of all requests for individual files -- such as Hypertext Markup Language files, their embedded graphic images and other associated files that get transmitted -- that people or bots have made from a website. Continue Reading
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News
30 Dec 2021
Threat actors target HPE iLO hardware with rootkit attack
Integrated Lights Out, HPE's remote server management platform, has been compromised by intruders who are using it to install a hard-to-detect rootkit in the wild. Continue Reading
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Tip
30 Dec 2021
Explore 9 essential elements of network security
Network security isn't a one-size-fits-all strategy. Dive into the various segments of network security, and learn how they overlap and interact with each other. Continue Reading
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Definition
28 Dec 2021
Encrypting File System (EFS)
Encrypting File System (EFS) provides an added layer of protection by encrypting files or folders on various versions of the Microsoft Windows OS. Continue Reading
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News
15 Dec 2021
Nation-state threat groups are exploiting Log4Shell
Multiple nation-state actors are taking advantage of the critical log4j 2 vulnerability, making mitigation even more urgent for some enterprises and government agencies. Continue Reading
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Guest Post
15 Dec 2021
The importance of automated certificate management
Managing the plethora of digital certificates can no longer be done in a spreadsheet by hand. Discover the importance of automated certificate management here. Continue Reading
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News
15 Dec 2021
'Insane' spread of Log4j exploits won't abate anytime soon
Experts say that the explosion in exploits for CVE-2021-44228 is only the early phase of what will be a long and tedious road to remediation for the critical vulnerability. Continue Reading
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News
14 Dec 2021
Hive ransomware claims hundreds of victims in 6-month span
Group-IB research has revealed that Hive ransomware-as-a-service operations are back and busier than ever, with a rapidly growing victim list over a short amount of time. Continue Reading
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Tip
14 Dec 2021
4 API authentication methods to better protect data in transit
The API attack surface isn't always well protected. Learn about the authentication methods your company can use to secure its APIs. Continue Reading
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News
09 Dec 2021
Threat actors targeting MikroTik routers, devices
Eclypsium researchers found vulnerable MikroTik devices have become a popular target for threat actors, who are exploiting known flaws that remain unpatched. Continue Reading
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Tip
06 Dec 2021
How to get started with attack surface reduction
Attack surface reduction and management are vital to any security team's toolbox. Learn what ASR is and how it complements existing vulnerability management products. Continue Reading
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News
03 Dec 2021
Hundreds of new vulnerabilities found in SOHO routers
Researchers credited vendors for their swift response to reports of widespread security vulnerabilities but warned users to make sure firmware is updated to avoid attacks. Continue Reading
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News
02 Dec 2021
Former Ubiquiti engineer arrested for inside threat attack
Nickolas Sharp is accused of attacking his former employer, stealing confidential data and attempting to extort the company into paying him approximately $2 million. Continue Reading
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News
01 Dec 2021
New Yanluowang ransomware mounting targeted attacks in US
Symantec threat analysts observed the new ransomware operation abusing legitimate tools such as ConnectWise's remote access product to move laterally inside networks. Continue Reading
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Feature
24 Nov 2021
Ultimate guide to secure remote access
This comprehensive secure remote access guide outlines the strategies, tools and best practices to provide anywhere access while protecting data, systems and users. Continue Reading
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Feature
23 Nov 2021
SecOps' need for traffic data drives NetSecOps collaboration
Security teams want to analyze network traffic data to identify anomalies and threats. As a result, network and security teams need to find ways to work together. Continue Reading