Latest cybersecurity reporting from selected sources.

FBI warns Russian spies now target Signal Backup Recovery Keys, enabling access to message history and long-term account takeover. The FBI and CISA updated their March 2026 warning about Russian intelligence phishing campaigns, and the new advisory adds a detail that wasn’t in the original: the operators have shifted their primary objective from stealing verification […]

The FBI and CISA are warning that a phishing campaign targeting Signal users tied to Russian intelligence services has evolved to steal Signal Backup Recovery Keys, allowing attackers to access victims' historical messages. [...]

The FBI and CISA have updated their March warning about Russian intelligence phishing Signal accounts, and the operators have added a step: they now coax targets into handing over their Signal Backup Recovery Key

GrassMarlin leaks sensitive information, provided your targeting phishing skills are sharp enough

GrassMarlin leaks sensitive information, provided your targeting phishing skills are sharp enough The Cybersecurity and Infrastructure Security Agency (CISA) is warning anyone who uses GrassMarlin, a tool developed by the National Security Agency (NSA), about a new vulnerability that attackers can use to snoop on sensitive information.…

PLUS: US takes down Iranian propaganda sites; Marketing company asks 'Why Do We Have Your Information?' And more! Infosec In Brief Russian intelligence-affiliated parties are posing as customer support services on commercial messaging applications such as Signal to compromise accounts and conduct phishing attacks, the FBI and Cybersecurity and Infrastructure Security Agency (CISA) warned last Friday.…

Threat actors affiliated with Russian Intelligence Services are conducting phishing campaigns to compromise commercial messaging applications (CMAs) like WhatsApp and Signal to seize control of accounts belonging to individuals with high intelligence value, the U.S. Cybersecurity and Infrastructure Security Agency (CISA) and Federal Bureau of Investigation (FBI) said Friday

Also: Spanish Hacker Granted Russian Asylum, Microsoft Patches Zero-DaysThis week, a CISA warning, Nest footage in Nancy Guthrie case, Signal phishing. Spanish hacker, Russian asylum. Spanish ministry services offline. BYOVD ransomware. The Conduent breach hit Volvo. Microsoft patched zero-days. ZeroDayRAT targeted devices. The SmarterMail breach. Another Fortinet flaw.

Also, Baltimore Public Schools Suffer Data Breach, Disney Menu Hacker SentencedThis week, zero-day exploits surged, accused Nefilim hacker extradited, Baltimore schools breach, CISA lists Broadcom Brocade, Commvault flaws, a fake WooCommerce patch, Akira hit Hitachi Vantara, ex-Disney worker sentenced and a Darcula phishing kit upgrade. FBI published 42,000 phishing domains.

Cybersecurity agencies from Australia, Canada, New Zealand, and the United States have published a joint advisory about the risks associated with a technique called fast flux that has been adopted by threat actors to obscure a command-and-control (C2) channel

PLUS: Phishing suspects used fishing gear as alibi; Apple's 'Find My' can track PCs and Androids; and more Infosec In Brief US Defense Secretary Pete Hegseth has reportedly ordered US Cyber Command to pause offensive operations against Russia, as the USA’s Cybersecurity and Infrastructure Security Agency (CISA) has denied any change in its posture.…

The US Cybersecurity and Infrastructure Security Agency recommended users turn on phishing-resistant MFA and switch to Signal-like apps for messaging

Sometimes, it turns out that the answers we struggled so hard to find were sitting right in front of us for so long that we somehow overlooked them. When the Department of Homeland Security, through the Cybersecurity and Infrastructure Security Agency (CISA), in coordination with the FBI, issues a cybersecurity warning and prescribes specific action, it’s a pretty good idea to at least read the

CISA and FBI Warn of Iranian Hackers Targeting US Political Campaigns and OfficialsThe Cybersecurity and Infrastructure Security Agency and the Federal Bureau of Investigation have issued new guidance to help U.S. political campaigns defend against increasing cyber threats from Iran, recommending stronger multi-factor authentication, phishing-resistant protocols, and vigilance against social engineering.

Identity-based threats on SaaS applications are a growing concern among security professionals, although few have the capabilities to detect and respond to them.  According to the US Cybersecurity and Infrastructure Security Agency (CISA), 90% of all cyberattacks begin with phishing, an identity-based threat. Throw in attacks that use stolen credentials, over-provisioned accounts, and

CISA ordered federal agencies to mitigate remote code execution zero-days affecting Windows and Office products that were exploited by the Russian-based RomCom cybercriminal group in NATO phishing attacks. [...]

The guidelines describe methods threat actors use to steal MFA credentials and how to defend against them

The toolkit protects election infrastructure targeted by phishing, ransomware and DDoS attacks