Stay updated on the latest bypass techniques threatening information security. Discover defenses and trends in system vulnerabilities with our insights.
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Background for this topic.
Bypass describes attacker methods that circumvent specific security controls, such as authentication checks, input validation, or detection systems, without directly exploiting the underlying vulnerability. These techniques often leverage design flaws, misconfigurations, or protocol weaknesses to evade protections like firewalls, multi-factor authentication, or antivirus scanning.
Bypassing controls can enable unauthorized access, data exfiltration, or persistent presence while avoiding alerts, complicating detection and response. Effective defense requires layered security measures, rigorous configuration management, and continuous validation of control effectiveness to identify and close bypass paths before attackers exploit them.
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Old Unix Symlink Trick Lets Malicious Code Bypass User ChecksWiz researchers found that six popular AI coding assistants can be tricked into modifying sensitive files, including SSH keys, while their approval prompts display a harmless filename. The GhostApproval technique exploits a decades-old Unix symlink behavior to mislead users.
Fraudsters Tokenize Stolen Cards Into Attacker WalletsGoogle Threat Intelligence Group warned that Chinese-language phishing-as-a-service platforms are using AI, encrypted messaging and real-time OTP interception to bypass multifactor authentication and provision stolen payment cards into attacker-controlled digital wallets worldwide.
Broken vdaemon Peering Authentication Enables Unauthenticated Admin AccessA maximum-severity vulnerability in Cisco Catalyst SD-WAN Controller is being actively exploited, giving attackers administrative privileges without authentication. The authentication bypass vulnerability stems from a broken peering authentication mechanism.
Three-Year Old Zero-Day Under Mass AttackA flaw in Cisco Software-defined network management software has become a hacker free-for-all, warn cybersecurity experts. The flaw allows an unauthenticated remote attacker to bypass authentication and obtain administrative privileges on the affected system.
ShinyHunters Campaign Uses Voice Phishing to Bypass MFA and Steal Corporate DataSecurity experts warn that "an active and ongoing campaign" being waged by ShinyHunters extortionists has at least 150 organizations in its sights across a range of sectors, with attackers using live voice phishing to bypass multifactor authentication, steal cloud data and hold it to ransom.
Telnet Flaw Allows Unauthenticated Users to Gain Root AccessHackers are on the hunt for open telnet ports in servers after discovering that a version of legacy client-server application protocol is vulnerable to an authentication bypass vulnerability. More than 800,000 servers could be actively targeted in the wild.
Okta Alerts Customers' CISOs to Malicious Campaigns Seeking Single Sign-On AccessA surge in attacks that bypass some types of multifactor authentication has been tied to a new generation of voice-phishing toolkits that give attackers the ability to orchestrate what a target sees in their browser, warns a new report from Okta, which is among the services being targeted.
Easy-to-Use Deepfake Services for Criminals Rapidly Improving, Researchers WarnFinancial firms' fraud and risk teams must bolster know-your-customer checks in the face of increasingly effective and affordable deepfake technology and services that can generate synthetic identities, convincing face-swaps and defeat "live" biometric checks to bypass defenses, warn researchers.
Experts Say AI Is Already Enabling Faster and Harder-to-Detect Attack CampaignsArtificial intelligence-fueled malware and automated cyber tools are enabling faster, more adaptive attacks at scale, with experts warning Congress that adversaries are now leveraging AI and quantum advances to outpace defenders and bypass outdated security architectures.
E-Commerce Face Existential Threat as Autonomous Shoppers Bypass AdsThe online retail industry spent decades honing how to nudge people into clicking the buy button. Now it faces a customer who doesn't want anything at all: the artificial intelligence shopping agent. Agentic commerce could hollow out retail media and force a shift in how platforms monetize.
Attackers Exploit Cloud Credential Exposure and 'Over-Permissioning,' Experts WarnAttackers keep hammering cloud-based identities to help them bypass endpoint and network defenses, logging in using inadvertently exposed credentials - or ones harvested through infostealers - then escalating access thanks to over-permissioned accounts, experts warn.
Attorney Jonathan Armstrong on Vetting Job Applicants, Red Flags and ComplianceNorth Korean operatives are using fake identities and remote job listings to bypass sanctions and infiltrate companies. But employers can avoid becoming unwitting accomplices, said legal expert Jonathan Armstrong, who advises firms to adopt stronger vetting practices and structured investigations.
AI Actions Bypass Security ToolsArtificial intelligence-powered browsers could expose enterprises to data theft, malware distribution and unauthorized access to corporate apps, new research shows. AI browsers built to complete tasks autonomously lack the security awareness to verify whether an instruction is safe.
Attacks on RMM Tools Surged in 2025, With 51 Solutions Flagged as TargetsCybercriminals are hijacking trusted remote monitoring and management tools to bypass defenses, gain persistent access and quietly stage ransomware attacks. Experts warn MSPs and enterprises that supply chain exposure amplifies the scale of these intrusions.
Huntress's Kyle Hanslovan Warns of MFA Bypass, Rogue Apps, Fake Device EnrollmentsCybercriminals are bypassing MFA using session tokens and rogue app access, with shadow workflows enabling persistent inbox theft against SMBs. Huntress offers behavioral training and managed identity response to SMBs for real protection not just more alerts, says CEO Kyle Hanslovan.
As Agentic AI Takes Over Workflows, Traditional Authentication Practices Fall ShortThe explosion of agentic AI and autonomous bots to orchestrate cross-system tasks is turning MFA into a brittle defense. Non-human identities often bypass human-centric security controls, operating with static credentials and undefined ownership, creating exploitable identity risks.
Citrix Issues Patches to Counter Active Attacks Against Two Critical VulnerabilitiesAdministrators of Citrix Netscaler devices are being urged to immediately patch their devices to fix two actively exploited vulnerabilities. One, dubbed Citrix Bleed 2, can be abused by hackers to bypass multifactor authentication, hijack user sessions and gain unauthorized access to the equipment.
Researcher Details Stealthy Multi-Turn Prompt Exploit Bypassing AI SafetyWell-timed nudges are enough to derail a large language model and use it for nefarious purposes, researchers have found. Dubbed "Echo Chamber," the exploit uses a chain of subtle prompts to bypass existing safety guardrails by manipulating the model's emotional tone and contextual assumptions.
Hackers Bypass MFA to Steal Australians' Banking CredentialsMelbourne-based ANZ Bank will introduce passwordless authentication for digital banking services amid news that hackers have stolen the banking credentials of tens of thousands of Australians. Cybercriminals used infostealer malware to steal the credentials of more than 30,000 Australians.
Hackers Use Stolen Certificates to Bypass Endpoint Detection and ResponseA Russian-speaking ransomware group has been deploying a malicious Windows PE driver that imitates a legitimate CrowdStrike Falcon driver to bypass endpoint security, warn researchers. The driver disables endpoint detection and response software by stripping process protections.