Latest cybersecurity reporting from selected sources.

Vendor Details Mitigations, Promises Patched PAN-OS Software in Coming WeeksPalo Alto Networks warned that a critical vulnerability in the PAN-OS software that runs its firewalls is being actively exploited in the wild by attackers. The vendor detailed temporary mitigations and promised to release updated software to fully patch the flaw later this month.

AWS Researchers Find an Interlock Server Laden With ToolsRansomware hackers exploited a flaw with a maximum vulnerability score in Cisco firewall management software weeks before the networking giant disclosed the vulnerability in early March. The group has focused extensively on critical infrastructure sectors in North America and Europe.

Juniper Tells Customers to Tune Their FirewallA critical vulnerability in Juniper Networks' primary operating system could give threat actors root level privileges to execute code on Juniper’s PTX Series routers. Successful exploitation would give attackers full command and control over devices without the need for authentication.

Lawsuit Claims SonicWall Cloud Backup Flaw Led to Ransomware Attack Against MarquisMarquis Software Solutions has sued SonicWall alleging a cloud backup data breach exposed firewall configuration files, including credentials and multifactor authentication scratch codes. The firm says the breach enabled an August 2025 ransomware attack and triggered dozens of class action lawsuits.

Also, Sedgwick Confirms Breach, Romanian Power Firm Hit, D-Link Flaws ExploitedThis week, Moody's said firewalls will be obsolete, Romanian critical infrastructure hacked, Sedgwick breach and a D-Link DSL flaw. Finland seized the Fitburg. Microsoft said Direct Send not to blame for Exchange phishing. Malicious Chrome extensions, European hotels targeted and health breaches.

Also, Sedgwick Confirms Breach, Romanian Power Firm Hit, D-Link Flaws ExploitedThis week, Moody's said firewalls will be obsolete, Romanian critical infrastructure hacked, Sedgwick breach and a D-Link DSL flaw. Finland seized the Fitburg. Microsoft said Direct Send not to blame for Exchange phishing. Malicious Chrome extensions, European hotels targeted and health breaches.

Outage Briefly Took Down Zoom, LinkedIn and Other WebsitesContent delivery network giant Cloudflare is investigating a brief outage early Friday that took down multiple websites. The incident marks the second outage in the span of a month, although the causes are unrelated. It stemmed from how Cloudflare's web application firewall parses requests.

CISA Says Agencies Believed They Patched Cisco Flaws But Had NotThe U.S. cyber defense agency issued new patch guidance after discovering multiple federal agencies failed to properly secure Cisco firewalls, leaving federal networks exposed to exploitation by a suspected Chinese threat actor despite a prior emergency directive.

Cisco Secure Firewall Management Centers Connected to RADIUS Left VulnerableNetworking equipment giant Cisco warned firewall customers to patch after discovering a maximum-severity vulnerability that could allow unauthenticated hackers to commandeer the server. The flaw rates a maximum score of 10 on the CVSS system.

Surge in Attack Attempts Spotted After Palo Alto Networks Details and Patches FlawAttackers have stepped up efforts to exploit a vulnerability in the software that runs Palo Alto Networks firewall appliances that could give them direct access to the underlying software. Unauthenticated hackers could use PHP scripts to bypass the PAN-OS management web interface.

Also: Google Fixes YouTube Vulnerabilities That Could Have Exposed User EmailsThis week: Microsoft, Ivanti and Google release fixes for critical vulnerabilities and urge priority patching; Lee Enterprises confirms a cyberattack disrupted newspaper operations; and thousands of KerioControl Firewalls exposed to critical remote code execution flaws.

Also: US Prosecutors Charge Suspected North Korean IT Worker CollaboratorsThis week, researchers spied Palo Alto firewall flaws, a North Korean IT worker conspiracy, ChatGPT as DDoS vector. Chinese hackers targeted a VPN maker, a fake PyPi package and a Russian threat actor shifted tactics. BreachForums admin faces prison and scammers used the release of Ross Ulbricht.

Hackers Targeted a PAN-OS Flaw Days After Its DisclosureA suspected Chinese hacking campaign that began in November is exploiting a vulnerability in Palo Alto firewalls to install a custom malware backdoor for espionage. UNC5325 activity aligns with the Chinese hacking strategy of targeting edge devices.

Unauthenticated Attackers Using Malicious Packet to Crash Devices' PAN-OS SoftwareSecurity giant Palo Alto Networks is pushing updates to fix a denial-of-service vulnerability in its PAN-OS device software that unauthenticated, remote attackers have been actively exploiting. The flaw can be triggered by sending firewalls "a malicious packet," which will crash the devices.

Also, US Court Rules NSO Group Violated Hacking Laws With Pegasus SpywareThis week, cyberattack disrupts Japan Airlines, U.S. court rules NSO Group violated hacking laws, the European Space Agency’s web store hacked, FTC orders Marriott to overhaul data security, Sophos patches critical firewall flaws and Apache fixes critical SQL injection in Traffic Control.

Many SonicWall Firewalls Are Unsupported or Lack Patches for Known VulnerabilitiesThousands of SonicWall network security devices remain exposed with critical security flaws, including 20,000 running outdated firmware that no longer receives vendor support. Despite patches available for some of these flaws, many organizations continue to run the outdated firmware.

Firewall Vendor Warns Attackers Using Valid Credentials They Previously StoleAttackers wielding an emerging strain of ransomware called Helldown have been gaining a foothold in victims' networks by exploiting a previously unknown flaw in their Zyxel firewalls, security researchers warn. Zyxel has warned attackers may be using valid credentials they previously stole.

No Patch Yet; Management Interface Lockdown Blunts Attacks, Networking Giant SaysAttackers are exploiting a zero-day vulnerability in some types of Palo Alto Networks firewalls, the cybersecurity giant warned. While details of the flaw remain scant - no patch is available - the vendor urged customers to ensure their firewall management interfaces are not internet-exposed.