Latest cybersecurity reporting from selected sources.

Canadian authorities on Wednesday arrested a 23-year-old Ottawa man on suspicion of building and operating Kimwolf, a fast spreading Internet-of-Things botnet that enslaved millions of devices for use in a series of massive distributed denial-of-service (DDoS) attacks over the past six months. KrebsOnSecurity publicly named the suspect in February 2026 after the accused launched a volley of DDoS, doxing and swatting campaigns against this author and a security researcher. He now faces criminal hacking charges in both Canada and the United States.

Also, Taiwan Rail Hack, Massive DDoS Attack and Karakurt Jail SentenceThis week, Microsoft Edge exposed passwords, Taiwan police make arrests in high-speed rail hack and a 2.45 billion-request DDoS attack. A Karakurt negotiator jailed, North Korean IT worker scams led to prison terms and France detained a teen over a government data breach. Another Ivanti zero-day.

Also, Europol Cracks DDoS Networks, Mythos Finds Bugs, France Portal HitThis week, scam compounds. Attackers exploit flaws pre-disclosure. A crackdown on DDoS-for-hire. No Mythos for CISA, yes for Mozilla. France ID portal breach. Israeli and Venezuelan critical infrastructure targeted. Russian hacking in Ukraine. An Apache flaw. A ransomware negotiator aided BlackCat.

Cyber threats are no longer coming from just malware or exploits. They’re showing up inside the tools, platforms, and ecosystems organizations use every day. As companies connect AI, cloud apps, developer tools, and communication systems, attackers are following those same paths

Cisco on Wednesday rolled out patches to address eight security vulnerabilities, three of which could be weaponized by an unauthenticated attacker to gain remote code execution (RCE) or cause a denial-of-service (DoS) condition on affected devices

Emerging threat group offers a broad range of attack services An emerging and fast-growing threat group is using a unique business model to offer cybercriminals a broad range of services that span from leaked databases and distributed denial-of-service (DDoS) attacks to hacking scripts and, in the future, potentially ransomware.…

Lithuanian state-owned energy group hit by pro-Russian hacking group

Sberbank's vice president and director of cybersecurity, Sergei Lebed, has told participants of the Positive Hack Days forum that the company is going through a period of unprecedented targeting by hackers. [...]

A stealthy and modular malware used to hack into Linux devices and build a DDoS botnet has seen a massive 254% increase in activity during the last six months, as Microsoft revealed today. [...]

Be careful when downloading a tool to cyber-target Russia: It could be an infostealer wolf dressed in sheep's clothing that grabs your cryptocurrency info instead.

Threat actors have been observed abusing a high-impact reflection/amplification method to stage sustained distributed denial-of-service (DDoS) attacks for up to 14 hours with a record-breaking amplification ratio of 4,294,967,296 to 1

Google says Russian, Belarusian, and Chinese threat actors targeted Ukrainian and European government and military organizations, as well as individuals, in sweeping phishing campaigns and DDoS attacks. [...]

Distributed denial-of-service (DDoS) attacks leveraging a new amplification technique called TCP Middlebox Reflection have been detected for the first time in the wild, six months after the novel attack mechanism was presented in theory

Today, the White House has linked the recent DDoS attacks that knocked down the sites of Ukrainian banks and defense agencies to Russia's Main Directorate of the General Staff of the Armed Forces (also known as GRU). [...]