PuTTY 0.84 Fixes SSH and Telnet Flaws

PuTTY 0.84 released with fixes for low-severity SSH key exchange crashes and Telnet prompt spoofing vulnerabilities, addressing cryptographic handling and session logic flaws exploitable in specific attack scenarios.

Microsoft Defender Auto-Isolates Compromised Devices

Microsoft Defender for Endpoint introduces automatic device isolation that disconnects compromised workstations from networks upon detecting high-confidence attacks, without requiring human intervention, as part of its Automatic Attack Disruption framework.

Anthropic Launches Free Security Plugin

Anthropic released a free security-guidance plugin for Claude Code terminal that reviews code edits, model outputs, and commits in real time to detect vulnerabilities before production.