[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"framework:mitre-attack\u002Ft1555-003":3},{"item":4,"lessons":18,"controls":48,"related":76},{"family":5,"item":6,"code":7,"title":8,"citations":9,"publisher":10,"summary_md":11,"official_text":12,"official_attribution":13,"official_url":14,"link_label":15,"note":16,"updated_at":17},"mitre-attack","t1555-003","T1555.003","Credentials from Web Browsers",7,"MITRE","**What attackers do.** Attackers read saved passwords, cookies and other secrets stored by web browsers, usually by extracting browser data files and decrypting them. Infostealer malware relies heavily on this. It serves the Credential Access tactic.\n\n**How to defend.** Use an enterprise password manager and disable browser password saving through policy where suitable. Keep browsers updated, since newer protections make extraction harder, and stop infostealers with endpoint protection. Use phishing-resistant MFA so stolen passwords are less useful.\n\n**Signs to look for.** Look for non-browser processes accessing browser profile databases, archives of browser data created in temp folders, and logins with credentials known to be saved in browsers. A common gap is personal browser profiles on corporate devices that sync corporate passwords to unmanaged accounts.","Adversaries may acquire credentials from web browsers by reading files specific to the target browser. Web browsers commonly save credentials such as website usernames and passwords so that they do not need to be entered manually in the future. Web browsers typically store the credentials in an encrypted format within a credential store; however, methods exist to extract plaintext credentials from web browsers.\n\nFor example, on Windows systems, encrypted credentials may be obtained from Google Chrome by reading a database file, `AppData\\Local\\Google\\Chrome\\User Data\\Default\\Login Data` and executing a SQL query: `SELECT action_url, username_value, password_value FROM logins;`. The plaintext password can then be obtained by passing the encrypted credentials to the Windows API function `CryptUnprotectData`, which uses the victim’s cached logon credentials as the decryption key.\n\nAdversaries have executed similar procedures for common web browsers such as FireFox, Safari, Edge, etc. Windows stores Internet Explorer and Microsoft Edge credentials in Credential Lockers managed by the Windows Credential Manager.","© The MITRE Corporation. This work is reproduced and distributed with the permission of The MITRE Corporation (MITRE ATT&CK®).","https:\u002F\u002Fattack.mitre.org\u002Ftechniques\u002FT1555\u002F003\u002F","Open the technique on MITRE ATT&CK",null,"2026-10-18T15:18:43.663+00:00",{"total":9,"list":19},[20,24,28,32,36,40,44],{"slug":21,"title":22,"published_at":23},"lunex-stealer-exploits-vulnerable-amd-driver-to-blind-security-tools-and-harvest-credentials","Lunex Stealer Exploits Vulnerable AMD Driver to Blind Security Tools and Harvest Credentials","2026-09-26T20:20:53.807+00:00",{"slug":25,"title":26,"published_at":27},"amnesiastealer-abuses-fake-github-page-to-hijack-macos-browser-sessions","AmnesiaStealer Abuses Fake GitHub Page to Hijack macOS Browser Sessions","2026-08-14T08:20:37.342+00:00",{"slug":29,"title":30,"published_at":31},"macos-clickfix-campaign-uses-browser-fingerprinting-to-hide-infostealer-lures","macOS ClickFix Campaign Uses Browser Fingerprinting to Hide Infostealer Lures","2026-08-05T18:20:54.467+00:00",{"slug":33,"title":34,"published_at":35},"acr-stealer-surge-exploits-social-engineering-to-harvest-enterprise-credentials","ACR Stealer Surge Exploits Social Engineering to Harvest Enterprise Credentials","2026-07-18T16:20:22.167+00:00",{"slug":37,"title":38,"published_at":39},"acr-stealer-exploits-clickfix-social-engineering-to-harvest-enterprise-credentials","ACR Stealer Exploits ClickFix Social Engineering to Harvest Enterprise Credentials","2026-07-17T02:20:23.311+00:00",{"slug":41,"title":42,"published_at":43},"ai-coding-agents-blur-the-line-between-legitimate-tools-and-attacker-behavior","AI Coding Agents Blur the Line Between Legitimate Tools and Attacker Behavior","2026-07-08T18:20:45.269+00:00",{"slug":45,"title":46,"published_at":47},"fileless-malware-phantom-stealer-hijacks-browser-credentials-in-memory","Fileless Malware Phantom Stealer Hijacks Browser Credentials in Memory","2026-06-16T22:20:22.41+00:00",[49,53,58,63,67,72],{"slug":50,"name":51,"problem":52,"stories":9},"endpoint-detection-response","Endpoint detection and response (EDR and XDR)","Malware and hands-on-keyboard attackers on laptops and servers get spotted and stopped.",{"slug":54,"name":55,"problem":56,"stories":57},"security-awareness-training","Security awareness training and phishing simulation","People recognise and report attacks instead of falling for them.",3,{"slug":59,"name":60,"problem":61,"stories":62},"dns-web-filtering","DNS filtering and secure web gateway","Users cannot reach known-malicious sites, and malware cannot phone home.",2,{"slug":64,"name":65,"problem":66,"stories":62},"email-security","Email security","Phishing, malware and invoice fraud are filtered out before they reach inboxes.",{"slug":68,"name":69,"problem":70,"stories":71},"ai-security","AI application security","Prompt injection, data leaks through AI tools and unapproved AI use get caught.",1,{"slug":73,"name":74,"problem":75,"stories":71},"application-allowlisting","Application allowlisting","Any program that reaches a computer can run, including ransomware and the remote-access tools attackers bring with them.",[77,82,88,93,98,102,106,110],{"family":78,"item":79,"code":80,"title":81,"together":9},"nist-800-53","si-3","SI-3","Malicious Code Protection",{"family":83,"item":84,"code":85,"title":86,"together":87},"cis","2","Control 2","Inventory and Control of Software Assets",6,{"family":89,"item":90,"code":91,"title":92,"together":87},"gdpr","32","Article 32","Security of processing",{"family":83,"item":94,"code":95,"title":96,"together":97},"14","Control 14","Security Awareness and Skills Training",4,{"family":78,"item":99,"code":100,"title":101,"together":97},"ia-5","IA-5","Authenticator Management",{"family":83,"item":103,"code":104,"title":105,"together":97},"10","Control 10","Malware Defenses",{"family":83,"item":107,"code":108,"title":109,"together":57},"13","Control 13","Network Monitoring and Defense",{"family":83,"item":111,"code":112,"title":113,"together":57},"4","Control 4","Secure Configuration of Enterprise Assets and Software"]