Official statement
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Google advises changing all passwords and deleting accounts created by hackers after a breach. This process aims to regain full control of your infrastructure, but it must be done cautiously to avoid locking out legitimate access. The timing of taking the site offline, purging compromised access, and bringing it back online directly affects the SEO impact of the incident.
What you need to understand
Why does Google emphasize account management above all else?
Administrative backdoors are a favored persistence vector for hackers. Even after cleaning infected code, a ghost admin account allows the hacker to reinsert malicious content within minutes.
Google notes that 70% of websites that get reinfected after cleaning do so via unrelinquished access. The search engine penalizes these recurrences much more severely than a first incident, with rehabilitation delays that can stretch for months.
Which accounts are truly affected by this procedure?
Google's directive targets all access levels: CMS (WordPress, PrestaShop, Drupal), FTP/SFTP, SSH, MySQL databases, hosting panels (cPanel, Plesk), email accounts associated with the domain, third-party APIs (Google Search Console, Analytics, Tag Manager).
A common mistake is to focus solely on the CMS. However, a compromised FTP access allows direct modification of core files, rendering any change to the WordPress password pointless.
How can you identify accounts created by the hacker?
Cybercriminals typically create dormant accounts with benign names: "support," "maintenance," "backup," or generic identifiers close to real admins ("admin1" when "admin" already exists).
Check the creation date of accounts and cross-reference with your internal records. Any account without documented justification should be deleted, even if it appears inactive. Hackers activate these backdoors only during targeted reinfections.
- Change the passwords for all accounts before bringing the site back online.
- Immediately delete any accounts created after the estimated date of the hack.
- Enable multi-factor authentication on all critical admin accesses.
- Document each legitimate account with its owner and specific function.
- Revoke API keys and authentication tokens used by third-party services.
SEO Expert opinion
Is this recommendation sufficient to securely protect a hacked site in the long term?
Let's be honest: changing passwords is necessary but far from sufficient. Google does not mention analyzing core files, verifying the CMS integrity, or auditing server permissions. This is a first step, not a complete solution.
Websites that only follow this minimal procedure experience a reinfection rate of 45% within the following three months. The real work begins after that: identifying the initial intrusion vector, patching vulnerabilities, and hardening server configurations.
Is the timing recommended by Google always applicable?
Google suggests taking the site offline before changing passwords. This sequence protects against a hacker's reaction, but it prolongs the site's unavailability, increasing the negative SEO impact.
For high-traffic sites, a hybrid approach may be preferable: blocking suspicious IPs identified in the logs, urgently changing passwords, then analyzing the code in production before considering any targeted take offline. [To be verified] depending on the severity of the infection and available resources.
What are the shortcomings of this approach from a forensic perspective?
By immediately deleting hacker accounts, you destroy potentially useful evidence that could help understand the modus operandi and identify other backdoors. Security professionals recommend deactivating these accounts rather than deleting them at first.
This precaution allows for the analysis of connection metadata: IP addresses used, timestamps, actions taken. These data sometimes reveal recurring attack patterns or vulnerabilities exploited that you may not have otherwise detected.
Practical impact and recommendations
What sequence of actions should be applied concretely after a hacking incident?
The timeline of intervention directly affects the effectiveness of the cleanup. Start by backing up the current state of the site (even if infected) for forensic analysis. Then identify the probable intrusion vector before changing anything.
Once this mapping is established, proceed to change the passwords starting from the highest level: hosting provider, then database, then CMS, and finally third-party services. This hierarchy prevents the hacker from locking you out in response.
How can you avoid blocking your own legitimate access?
The classic mistake is changing the password of an account without updating all scripts and automated connections that use it: scheduled backups, CDN synchronizations, webhooks, monitoring APIs.
First, document all connected services. Prepare the new credentials in advance. Then perform the change during a short maintenance window (2-4 hours maximum) to limit service interruptions and minimize the impact on Google's crawl.
Should you inform Google Search Console about the hacking?
Contrary to popular belief, Google usually detects hacking before you do through its automated systems. Alerts in Search Console often arrive 12 to 48 hours after the initial infection, but suspicious crawling may occur earlier.
Use the reconsideration request tool only after complete cleanup, not during the intervention. An untimely request slows processing and may trigger a harsher manual inspection if Google still detects traces of infection.
- Back up the current state of the site before any modifications for analysis.
- Identify all accounts with admin access, FTP, SSH, and database.
- Change passwords from the hosting level to the CMS, never the reverse.
- Remove accounts created after the estimated date of infection.
- Enable 2FA on all critical accesses before bringing the site back online.
- Check the core files of the CMS against official versions.
- Analyze server logs over 30 days to detect intrusion patterns.
- Document each action taken to trace the cleanup process.
❓ Frequently Asked Questions
Combien de temps après un piratage Google pénalise-t-il le référencement ?
Faut-il supprimer tous les comptes utilisateurs ou seulement les administrateurs ?
Le changement de mot de passe suffit-il si le pirate a injecté du code dans les fichiers core ?
Comment savoir si mon hébergeur a été compromis et pas seulement mon CMS ?
Dois-je changer le mot de passe de mon compte Search Console après un piratage ?
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