DDoS wave continues as Mastodon hit after Bluesky incident

Mastodon suffered a major DDoS attack shortly after a similar incident hit Bluesky. The outage was significant but resolved within a few hours. Mastodon was hit by a major DDoS attack just days after a similar disruption affected Bluesky. Mastodon is a free and open-source software platform for decentralized social networking with microblogging features similar […]

April 22, 2026
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Mirai Botnet exploits CVE-2025-29635 to target legacy D-Link routers

Mirai botnet is targeting old D-Link routers using CVE-2025-29635, a command injection flaw exploitable via crafted POST requests after public PoC disclosure. A Mirai botnet is actively exploiting a command injection vulnerability, tracked as CVE-2025-29635, in discontinued D-Link routers, Akamai reports. The flaw allows attackers to inject commands because an attacker-controlled value is copied without […]

April 22, 2026
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Microsoft out-of-band updates fixed critical ASP.NET Core privilege escalation flaw

Microsoft fixed critical ASP.NET Core vulnerability, tracked as CVE-2026-40372 (CVSS score of 9.1), that lets attackers escalate privileges. Microsoft released out-of-band updates to address a serious ASP.NET Core vulnerability tracked as CVE-2026-40372 (CVSS score of 9.1). Microsoft fixed the flaw in ASP.NET Core version 10.0.7. An attacker could exploit the flaw to gain SYSTEM-level privileges, access […]

April 22, 2026
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Defensive Security Podcast Episode 345

Please consider supporting the DefSec podcast here.

Links to this week’s stories:

https://www.darkreading.com/threat-intelligence/axios-attack-complex-social-engineering-industrialized
https://www.bleepingcomputer.com/news/security/new…

April 22, 2026
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Critical BRIDGE:BREAK flaws impact Lantronix and Silex Technology converters

22 BRIDGE:BREAK flaws hit Lantronix and Silex Technology converters, exposing approximately 20,000 devices to hijacking and data tampering. Researchers at Forescout Research Vedere Labs found 22 BRIDGE:BREAK flaws in serial-to-IP devices from Lantronix and Silex Technology. Serial-to-IP converters, also known as serial device servers, connect legacy serial equipment to modern IP networks for remote monitoring […]

April 22, 2026
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