https://blog.klapprechner.org/en/tags/security/Recent content in Security on Crypto BiberHugo -- gohugo.ioen-USTue, 21 Jul 2026 05:15:00 +0200https://blog.klapprechner.org/en/posts/sharepoint-luecke-aktiv-ausgenutzt/Tue, 21 Jul 2026 05:15:00 +0200https://blog.klapprechner.org/en/posts/sharepoint-luecke-aktiv-ausgenutzt/A critical deserialization bug in on-prem SharePoint (CVSS 9.8) came under attack right after Microsoft’s record Patch Tuesday. Stolen machine keys keep intruders in even after patching.https://blog.klapprechner.org/en/posts/7-zip-codeschmuggel-luecke/Tue, 21 Jul 2026 05:10:00 +0200https://blog.klapprechner.org/en/posts/7-zip-codeschmuggel-luecke/A heap overflow in the XZ decoder (CVE-2026-14266) affects 7-Zip 21.07 through 26.01. Version 26.02 fixes it — but only if you install it yourself.https://blog.klapprechner.org/en/posts/allbridge-flash-loan-exploit/Tue, 21 Jul 2026 05:05:00 +0200https://blog.klapprechner.org/en/posts/allbridge-flash-loan-exploit/An attacker used a $1.12M flash loan to drain about $1.65M from Allbridge’s Solana pools. The bridge is paused and liquidity providers are told to withdraw.https://blog.klapprechner.org/en/posts/chrome-notfallupdate/Mon, 20 Jul 2026 09:30:00 +0200https://blog.klapprechner.org/en/posts/chrome-notfallupdate/Google has shipped an out-of-band security update for Chrome. At least one of the patched flaws is already being used in attacks — don’t put this one off.https://blog.klapprechner.org/en/posts/nis2-kritis/Sun, 19 Jul 2026 10:00:00 +0200https://blog.klapprechner.org/en/posts/nis2-kritis/The EU’s cybersecurity rules cover far more organisations than many expect — from hospitals to emergency services. A look at who is affected by NIS2 and KRITIS.https://blog.klapprechner.org/en/posts/zachxbt-hardware-wallets/Fri, 17 Jul 2026 11:30:00 +0200https://blog.klapprechner.org/en/posts/zachxbt-hardware-wallets/The well-known onchain investigator calls hardware wallets unreliable and suggests a stripped-down iPhone used only for signing. A look at his arguments.