Stay updated on the latest backdoor threats in cybersecurity. Discover news, analysis, and insights on covert access vulnerabilities.
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Background for this topic.
A backdoor is a hidden method within software or hardware that allows bypassing normal authentication to access a system or network. These can be intentionally created by developers for maintenance or debugging but are frequently exploited or implanted by attackers to maintain unauthorized, persistent access. Backdoors often appear as undocumented commands, hidden user accounts, or covert network services designed to evade detection.
In cybersecurity, backdoors enable attackers to circumvent security controls, increasing the risk of prolonged system compromise and data exposure. Detecting backdoors requires careful code review, monitoring for unusual system behavior, and verifying integrity through trusted baselines. Identifying backdoor indicators in malware or attacker infrastructure is critical for limiting unauthorized access and reducing attacker dwell time within networks. Defensive measures focus on eliminating hidden access points and strengthening authentication mechanisms.
Weekly headline count for the current query.
Microsoft says GigaWiper combines at least 3 malware families into one modular tool
National vulnerability database claims monitoring mechanism can forward Chinese users' data to remote servers
Spotted in intrusions targeting insurance, education, IT, and professional services sectors
MOIS-linked cyber outfit puts on a ransomware show to disguise the wide-open backdoor behind the scenes
Latest in long-running pwning of Cisco kit found in mystery Fed agency
Latest in long-running pwning of Cisco kit found in mystery Fed agency A US federal agency was successfully targeted by a previously unknown backdoor malware called Firestarter, according to CISA cybersnoops and their UK counterparts – neither of which disclosed the agency's name.…
Who is knocking at the Dohdoor? Digital intruders with possible links to North Korea have been infecting US education and healthcare sectors with a never-before-seen backdoor since at least December, according to security researchers.…
$300 a month buys you a backdoor that looks like legit software Researchers at Proofpoint late last month uncovered what they describe as a "weird twist" on the growing trend of criminals abusing remote monitoring and management software (RMM) as their preferred attack tools.…
Full scale of infections remains 'unknown' China-linked attackers exploited a maximum-severity hardcoded-credential bug in Dell RecoverPoint for Virtual Machines as a zero-day since at least mid-2024. It's all part of a long-running effort to backdoor infected machines for long-term access, according to Google's Mandiant incident response team.…
The group targets telecoms, critical infrastructure - all the usual high-value orgs Security researchers have attributed the Notepad++ update hijacking to a Chinese government-linked espionage crew called Lotus Blossom (aka Lotus Panda, Billbug), which abused weaknesses in the update infrastructure to gain a foothold in high-value targets by delivering a newly identified backdoor dubbed Chrysalis.…
Redmond uncovers SesameOp, a backdoor hiding its tracks by using OpenAI’s Assistants API as a command channel Hackers have found a new use for OpenAI's Assistants API – not to write poems or code, but to secretly control malware.…
Not to be confused with all the other reports of Chinese intruders on US networks that came to light this week RedNovember, a Chinese state-sponsored cyberspy group, targeted government and critical private-sector networks around the globe between June 2024 and July 2025, exploiting buggy internet-facing appliances to deploy a Go-based backdoor called Pantegana and other offensive security tools, including Cobalt Strike and SparkRAT.…
Keeping Pyongyang's coffers full North Korean-linked crews connected to the pervasive IT worker scams have upped their malware game, using more advanced tools, including a backdoor that has much of the same code as Pyongyang's infamous Lazarus Group deploys.…
Instead of job offers, victims get MiniJunk backdoor and MiniBrowse stealer Suspected Iranian government-backed online attackers have expanded their European cyber ops with fake job portals and new malware targeting organizations in the defense, manufacturing, telecommunications, and aviation sectors.…
'We do believe that this was likely the creation of a cybercrime group,' threat hunter tells The Reg ChillyHell, a modular macOS backdoor believed to be long dormant, has likely been infecting computers for years while flying under the radar, according to security researchers who spotted a malware sample uploaded to VirusTotal in May.…
Tulsi Gabbard boasts Washington forced Blighty to drop iPhone encryption fight The UK government has reportedly abandoned its attempt to strong-arm Apple into weakening iPhone encryption after the White House forced Blighty into a quiet climb-down.…
'Plague' malware has been around for months without tripping alarms Researchers at German infosec services company Nextron Threat have spotted malware that creates a highly-persistent Linux backdoor and say antivirus engines do not flag the code as malicious.…
Someone's OVERSTEPing the mark Unknown miscreants are exploiting fully patched, end-of-life SonicWall VPNs to deploy a previously unknown backdoor and rootkit, likely for data theft and extortion, according to Google's Threat Intelligence Group.…
Hardcoded passwords and path traversals keeping bug hunters in work Security researchers have issued a warning about a pre-authentication exploit chain affecting a CMS used by some of the biggest companies in the world.…
No formal attribution made but two separate probes hint at the same suspect Thousands of Asus routers are currently ensnared by a new botnet that is trying to disable Trend Micro security features before exploiting vulnerabilities for backdoor access.…