The Computer Incident Response Center Luxembourg (CIRCL) is a government-driven initiative designed to gather, review, report and respond to computer security threats and incidents.

Malware Information Sharing Platform (MISP) and Threat Sharing Platform
DMA Logo
Dynamic Malware Analysis (DMA)
USB Logo
Clean documents from untrusted USB keys / sticks
DNS Logo
Database storing historical DNS records

Recent highlights

TR-73 - Ransomware FAQ - 7th March 2023

TR-72 - Vulnerable Microsoft Exchange server metrics leading to alarming situation - 21st February 2023

TR-70 - Vulnerabilities in Microsoft Exchange CVE-2022-41040 - CVE-2022-41082 - 30th September 2022

New online service - Pandora Document and File Analysis - 7th March 2022

TR-68 - Best practices in times of tense geopolitical situations - 1st March 2022

TR-65 - Vulnerabilities and Exploitation of Log4j (Remote code injection in Log4j)

TR-64 - Exploited Exchange Servers - Mails with links to malware from known/valid senders - 10th November 2021

CIRCL hash lookup is a public API to lookup hash values against known database of files. - 8th July 2021

TR-61 - Critical vulnerabilities in Microsoft Exchange - 11th March 2021

TR-58 - CVE-2020-0796 - Critical vulnerability in Microsoft SMBv3 - status and mitigation - 11th March 2020

TR-54 - Sextortion scam emails - I know your password- 2nd August 2018

Meltdown and Spectre Bugs in modern computers leak passwords and sensitive data - 3rd January 2018

TR-50 - WPA2 handshake traffic can be manipulated to induce nonce and session key reuse - 16th October 2017

TR-49 - CVE-2017-7494 - A critical vulnerability in Samba - remote code execution from a writable share - 26th May 2017

MS17-010 is critical and patches MUST BE applied. including EOL Windows. - 12th May 2017

TR-46 - Information Leaks Affecting Luxembourg and Recommendations (regularly updated) - 22nd December 2016

TR-42 - CVE-2015-7755 - CVE-2015-7756 - Critical vulnerabilities in Juniper ScreenOS - 21st December 2015

TR-41 (fr) - Crypto Ransomware - Défenses proactives et réponse sur incident - 1st December 2015

TR-41 - Crypto Ransomware - Proactive defenses and incident response - 1st December 2015

TR-38 (fr) - Attaques visant les solutions bancaires d'entreprise - Recommandations - 28th May 2015

TR-38 - Attacks targeting enterprise banking solutions - recommendations and remediations - 19th May 2015

TR-37 - VENOM / CVE-2015-3456 - Critical vulnerability in QEMU Floppy Disk Controller (FDC) emulation - 14th May 2015

TR-36 Example setup of WordPress with static export Another approach to secure your WordPress CMS - 29th April 2015

TR-33 Analysis - CTB-Locker / Critroni - 18th February 2015

A new wave of crypto ransomware targeting Luxembourg - Une nouvelle vague de ransomware cible le Luxembourg - 5th February 2015

glibc: buffer overflow in gethostbyname - 27th January 2015

NTP (Network Time Protocol) daemon - ntpd - critical vulnerabilities - 22nd December 2014

The SSL protocol 3.0, as used in OpenSSL through 1.0.1i and other products, are vulnerable to critical padding oracle attack - CVE-2014-3566

TR-27 - GNU Bash Critical Vulnerability - CVE-2014-6271 - CVE-2014-7169 - 24th September 2014

CIRCL warns about spear phishing scams targeting corporate executives and their accounting department - 14th September 2014

[Previous news]

Latest CIRCL tweets

  • RT @MISPProject: New MISP workflow blueprint has been added to tag ASN based on @circl_lu BGP ranking service available on… 2022-11-15 08:20:39
  • The MeliCERTes project is concluding after 3-years of hard work to create an open platforms to collaborate on cyber… 2022-11-11 14:25:25
  • RT @LU_CIX: Join us next week at the #Luxembourg #Internet Days for the speech of Jean-Louis HUYNEN from @circl_lu on how to model and shar… 2022-11-10 10:10:57
  • "Citrix Gateway and Citrix ADC Security Bulletin for CVE-2022-27510 CVE-2022-27513 and CVE-2022-27516" One of the C… 2022-11-09 12:51:58
  • RT @MISPProject: A huge thank to all participants, organisers and speakers at @FIRSTdotOrg #FIRSTCTI22 in Berlin. It was a blast. Our MISP… 2022-11-09 11:44:23
  • RT @campuscodi: The Microsoft November 2022 Patch Tuesday updates are out. 68 vulnerabilities fixed. Also, 4 zero-days: -CVE-2022-41128, J… 2022-11-09 11:24:47
  • RT @virusbtn: The Zimperium zLabs team write about the architecture and modus operandi of the Cloud9 malicious browser extension. https://t… 2022-11-09 11:24:26