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From Karel to picoCTF: You Can Win Your First Python CTF in 2026

The 2026 picoCTF competition has officially expanded with more challenges than ever before, yet the transition from the block-based logic of Karel to the raw Python scripting required for CTFs remains ...
Hackaday

This Week In Security: Another Linux Exploit, Ubuntu Knocked Offline, Finals Interrupted, And Backdoored Tools

After the CopyFail vulnerability gave root access from any user on almost all distributions last week, this week we’ve got DirtyFrag. This chains the vulnerability in CopyFail (xfrm-ESP) and ...

Ars Asks: Share your shell and show us your tricked-out terminals!

Exposure therapy to the bash shell brought me to the tipping point, and I jumped ship to the Macintosh side of the house. It ...
Microsoft

CVE-2026-31431: Copy Fail vulnerability enables Linux root privilege escalation across cloud environments

A high-severity Linux vulnerability, “Copy Fail” (CVE-2026-31431), enables root privilege escalation across cloud ...
Redmond Magazine

Launching a PowerShell Script from Excel, Revisited

We're going to build off my previous series to show how to further the communication channel between Excel and PowerShell. In a recent series of posts, I explained how to launch a PowerShell script ...
Reuters

Shell faces new court case in the Netherlands over emissions

AMSTERDAM, April 21 (Reuters) - A Dutch climate activist group launched a new court case against Shell (SHEL.L), opens new tab on Tuesday in ‌the Netherlands, demanding that the British energy major ...