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 * About
 * Team
 * News
 * Services
 * Training
 * Publications
 * Projects
 * Contact

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.

OUR SERVICES

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MISP Threat Intelligence Sharing Platform and Private Sharing Communities

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Dynamic Malware Analysis (DMA)

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Clean documents from untrusted USB keys / sticks

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Database storing historical DNS records
More services


RECENT HIGHLIGHTS

TR-88 - Motivation, procedure and rational for leaked credential notifications -
29th August 2024

Learning from the Recent Windows/Falcon Sensor Outage - Causes and Potential
Improvement Strategies in Linux with Open Source - 23rd July 2024

TR-87 - CrowdStrike Agent causing BSOD loop on Windows - Faulty Update on Falcon
Sensor - 19th July 2024

TR-86 - Check Point VPN Information Disclosure (CVE-2024-24919) - Actively
Exploited - 31st May 2024

TR-85 - Three vulnerabilities in Cisco ASA software/applicance and FTD software
being exploited - 25th April 2024

TR-84 - PAN-OS (Palo Alto Networks) OS Command Injection Vulnerability in
GlobalProtect Gateway - CVE-2024-3400 - 12th April 2024

TR-82 - backdoor discovered in xz-utils - CVE-2024-3094 - 30th March 2024

Cybersecurity Unites Across Borders - FETTA Project Launched to Strengthen EU
Cyber Threat Intelligence - 31st January 2024

TR-78 - CVE-2023-46805 (Authentication Bypass) & CVE-2024-21887 (Command
Injection) for Ivanti Connect Secure and Ivanti Policy Secure Gateways - 11th
January 2024

TR-77 - Spear phishing and voice call scams targeting corporate executives and
their accounting department - 30th August 2023

TR-76 - Multiple high severity vulnerabilities in CODESYS V3 SDK could lead to
RCE or DoS - 14th August 2023

TR-75 - Unauthenticated remote code execution vulnerability in NetScaler ADC
(formerly Citrix ADC) and NetScaler Gateway (formerly Citrix Gateway) -
CVE-2023-3519 - 21st July 2023

TR-74 - A heap-based buffer overflow vulnerability [CWE-122] in FortiOS -
CVE-2023-27997 - 5th July 2023

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 https://t.co/Kad… 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… https://t.co/a5ZXDDwQOi
   https://twitter.com/i/web/status/1591074624250343424 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… https://t.co/JkpigsMiDw
   https://twitter.com/i/web/status/1590326328553013248 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

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ABOUT CIRCL

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CIRCL is the CERT (Computer Emergency Response Team/Computer Security Incident
Response Team) for the private sector, communes and non-governmental entities in
Luxembourg.

Content from this website is classified as TLP:CLEAR (previously: TLP:WHITE)
information may be distributed without restriction, subject to copyright
controls.

Copyright 2008 - 2023 CIRCL Computer Incident Response Center Luxembourg (LHC -
Luxembourg House of Cybersecurity).

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