FIRESTARTER: Cisco ASA Backdoor
The Advisory That Changes EverythingOn April 23, 2026, CISA and the United Kingdom National Cyber Security Centre jointly assessed that…
⚡ Weekly Recap: Fast16 Malware, XChat Launch, Federal Backdoor, AI Employee Tracking & More
Everything is dumb again. This week feels broken in a very familiar way. Old tricks are back. New tools are doing shady crap. Supply chains…
Hackers Exploiting Cisco Firepower Devices’ Using n-day Vulnerabilities to Gain Unauthorized Access
State-sponsored threat actors are actively targeting Cisco Firepower devices by chaining known vulnerabilities to deploy a highly customized…
Firestarter malware survives Cisco firewall updates, security patches
Cybersecurity agencies in the U.S. and U.K. are warning about a custom malware called Firestarter persisting on Cisco Firepower and Secure…
FIRESTARTER Backdoor Hit Federal Cisco Firepower Device, Survives Security Patches
The U.S. Cybersecurity and Infrastructure Security Agency (CISA) has revealed that an unnamed federal civilian agency's Cisco Firepower device…
Governments on high alert after CISA snuffs out Firestarter backdoor on fed network
A US federal agency was successfully targeted by a previously unknown backdoor malware called Firestarter, according to CISA cybersnoops and…
ThreatsDay Bulletin: Cisco 0-Days, AI Bug Bounties, Crypto Heists, State-Linked Leaks and 20 More Stories
Behind every click, there's a risk waiting to be tested. A simple ad, email, or link can now hide something dangerous. Hackers are getting…
Cisco Warns of New Firewall Attack Exploiting CVE-2025-20333 and CVE-2025-20362
Cisco on Wednesday disclosed that it became aware of a new attack variant that's designed to target devices running Cisco Secure Firewall…
Cisco ASA/FTD 0-Day Vulnerability Exploited for Authentication Bypass – PoC Released
Cisco has released advisories for a zero-day exploit chain affecting its Secure Firewall Adaptive Security Appliance (ASA) and Secure Firewall…
Week in review: Many Cisco ASA firewalls still unsecure, hackers claim Red Hat’s GitLab breach
Here’s an overview of some of last week’s most interesting news, articles, interviews and videos: Keeping the internet afloat: How…
500X Surge in Scanning Targets Palo Alto and Cisco ASA
Enterprise security teams are on high alert after an extraordinary 500% spike in mass scanning activity was detected against Palo Alto…
Scanning Activity on Palo Alto Networks Portals Jump 500% in One Day
Threat intelligence firm GreyNoise disclosed on Friday that it has observed a spike in scanning activity targeting Palo Alto Networks login…
Cyber Brief 25-10 – September 2025
Cyber Brief (September 2025)October 1, 2025 - Version: 1TLP:CLEARExecutive summaryWe analysed 285 open source reports for this Cyber Security…
Too many Cisco ASA firewalls still unsecure despite zero-day attack alerts
Despite Cisco and various cybersecurity agencies warning about attackers actively exploting zero-day vulnerabilities (CVE-2025-20333 and…
48+ Cisco Firewalls Vulnerable to Actively Exploited 0-Day Vulnerability in the Wild
A critical zero-day vulnerability affecting thousands of Cisco firewalls is being actively exploited by threat actors in the wild. The…
Nearly 50,000 Cisco firewalls vulnerable to actively exploited flaws
Roughly 50,000 Cisco Adaptive Security Appliance (ASA) and Firewall Threat Defense (FTD) appliances exposed on the public web are vulnerable…
Warnings about Cisco vulns under active exploit are falling on deaf ears
Nearly 50,000 Cisco ASA/FTD instances vulnerable to two bugs that are actively being exploited by "advanced" attackers remain exposed to the…
Weekly Recap: Cisco 0-Day, Record DDoS, LockBit 5.0, BMC Bugs, ShadowV2 Botnet & More
Cybersecurity never stops—and neither do hackers. While you wrapped up last week, new attacks were already underway. From hidden…
Lesson From Cisco ASA 0-Day RCE Vulnerability That Actively Exploited In The Wild
The cybersecurity landscape experienced a significant escalation in September 2025, when Cisco disclosed multiple critical zero-day…
Hunt for RedNovember: Beijing hacked critical orgs in year-long snooping campaign
RedNovember, a Chinese state-sponsored cyberspy group, targeted government and critical private-sector networks around the globe between June…
Critical Cisco SSL VPN Vulnerabilities
The cybersecurity world is on alert after multiple critical vulnerabilities were discovered in Cisco SSL VPN solutions, specifically affecting…
Agencies Around the Globe Urge Patching of Cisco ASA Bug Under Active Exploit
The U.S. Cybersecurity and Infrastructure Security Agency (CISA) has issued Emergency Directive 25-03 in response to an ongoing and severe…
CISA Emergency Directive 25-03: Identify and Mitigate Potential Compromise of Cisco Devices
This page contains a web-friendly version of the Cybersecurity and Infrastructure Security Agency’s Emergency Directive 25-03: Identify…
Cisco ASA zero-day vulnerabilities exploited in sophisticated attacks
A widespread campaign aimed at breaching organizations via zero-day vulnerabilities in Cisco Adaptive Security Appliances (ASA) has been…
ArcaneDoor Threat Actor Resurfaces in Continued Attacks Against Cisco Firewalls
A newly identified cyber-attack campaign has exploited Cisco Adaptive Security Appliance (ASA) devices in a sophisticated operation linked to…
CISA Warns of Cisco Firewall 0-Day Vulnerabilities Actively Exploited in the Wild
CISA has issued an Emergency Directive mandating immediate action to mitigate two critical zero-day…
UK and US security agencies order urgent fixes as Cisco firewall bugs exploited in wild
Cybersecurity agencies on both sides of the Atlantic are sounding the alarm over Cisco firewall vulnerabilities that are being exploited by an…
Cisco ASA Firewall Zero-Day Exploits Deploy RayInitiator and LINE VIPER Malware
The U.K. National Cyber Security Centre (NCSC) has revealed that threat actors have exploited the recently disclosed security flaws impacting…
Urgent: Cisco ASA Zero-Day Duo Under Attack; CISA Triggers Emergency Mitigation Directive
Cisco is urging customers to patch two security flaws impacting the VPN web server of Cisco Secure Firewall Adaptive Security Appliance (ASA)…
CISA orders agencies to patch Cisco flaws exploited in zero-day attacks
CISA has issued a new emergency directive ordering U.S. federal agencies to secure their Cisco firewall devices against two flaws that have…
Cisco warns of ASA firewall zero-days exploited in attacks
Cisco warned customers today to patch two zero-day vulnerabilities that are actively being exploited in attacks and impact the company's…