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---
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title: "How to React to abnormal activity detected on your web hosting"
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excerpt: "Discover the steps to follow when abnormal activity is detected on your OVHcloud web hosting"
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title: "How to react to abnormal activity detected on your web hosting"
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excerpt: "Find out which steps to follow when suspicious activity is detected on your OVHcloud web hosting"
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updated: 2025-10-01
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---
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## Objective
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This guide explains why **abnormal activity** might be detected on your web hosting, the **temporary consequences** (security blocks), and **how to restore** functionality once the issue is resolved.
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This guide explains the possible reasons why you might be notified about **abnormal activity** detected on your web hosting, the **temporary consequences** (security blocks), and **how to restore** functionality once the issue is resolved.
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**Discover how to react to unusual activity on your OVHcloud web hosting.**
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## Requirements
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- Have an [OVHcloud web hosting offer](/links/web/hosting).
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- Be logged into your [OVHcloud Control Panel](/links/manager).
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- An [OVHcloud web hosting](/links/web/hosting)
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- Access to the [OVHcloud Control Panel](/links/manager)
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## Instructions
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> [!primary]
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> To protect your website and visitors, we automatically activate security measures whenever unusual activity is detected on your web hosting. This is not always an attack; for example, the cause could also be a poor website configuration, a third-party script, or a faulty extension.
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> To protect your website and visitors, we automatically activate security measures whenever unusual activity is detected on your web hosting. The cause is not always an attack; it could also be a poor website configuration, a third-party script, or a faulty extension, for example.
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### Why is this message displayed?
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We have detected unusual activity that could harm your service:
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- Case 1 – **Detected malware**: Likely presence of **malicious files**.
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- Case 2 – **Unusual volume of emails sent via PHP** (scripts/applications).
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- Case 3 – **Unusual volume of outgoing requests** (external connections).
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- Case 1 – **Detected malware**: Likely presence of **malicious files**
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- Case 2 – **Unusual volume of emails sent via PHP** (scripts/applications)
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- Case 3 – **Unusual volume of outgoing requests** (external connections)
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For security reasons and depending on the situation, certain features may be temporarily blocked:
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- **Website access** (Case 1)
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- **Email sending via PHP** (Case 1 and Case 2).
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- **Outgoing requests (TCP OUT)** (Case 1 and Case 3).
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- **Email sending via PHP** (Case 1 and Case 2)
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- **Outgoing requests (TCP OUT)** (Case 1 and Case 3)
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### What are the consequences for my website?
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### Steps to resolve the situation
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#### Case 1 — Detected Malware
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#### Case 1 — Detected malware
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Your hosting likely contains malicious files. To understand and address these anomalies, follow our guide "[Use Case - Recommendations After Your Website is Hacked](/pages/web_cloud/web_hosting/cms_what_to_do_if_your_site_is_hacked)".
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Your hosting likely contains malicious files. To understand and address these anomalies, follow our guide:
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[Use Case - Recommendations After Your Website is Hacked](/pages/web_cloud/web_hosting/cms_what_to_do_if_your_site_is_hacked)
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**Once the cleanup is complete**, refer to the section "[Lift Security Measures](#lift-security-measures)" below.
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#### Case 2 — Unusual Volume of Emails Sent via PHP
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#### Case 2 — Unusual volume of emails sent via PHP
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Your website has sent a number of emails via PHP exceeding the normal threshold. This could be **legitimate** (campaign, newsletter module) or **undesired** (abusive use of a form, misconfigured script, compromised extension). To understand and resolve these anomalies, consult our guide "[Track and Manage Automated Emails from Your Web Hosting](/pages/web_cloud/web_hosting/mail_function_script_records)".
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Your website has sent a number of emails via PHP exceeding the normal threshold. This action could be **legitimate** (campaign, newsletter module) or **undesired** (abusive use of a form, misconfigured script, compromised extension). To understand and resolve these anomalies, consult our guide:
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[Track and Manage Automated Emails from Your Web Hosting](/pages/web_cloud/web_hosting/mail_function_script_records)
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**Once the situation is normalized**, proceed to the section "[Lift Security Measures](#lift-security-measures)".
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**Once the situation is normalized**, proceed to the section "[Lift security measures](#lift-security-measures)".
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> [!primary]
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>
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> This measure does **not** apply to sending messages from your email address (via webmail or a mail client). It only applies to **emails sent from your scripts** (PHP `mail()` function or SMTP sending triggered by an application from your web hosting).
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> This measure does **not** apply to sending messages from an email account (via webmail or a mail client). It only applies to **emails sent via a script** (the PHP `mail()` function or SMTP sending triggered by an application on your web hosting).
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#### Case 3 — Unusual Volume of Outgoing Requests (TCP OUT)
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#### Case 3 — Unusual volume of outgoing requests (TCP OUT)
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Your website is making numerous external connections (APIs, updates, HTTP calls, etc.). This could indicate a malfunction. To understand and resolve these anomalies, consult our guide "[Use Case - Recommendations After Your Website is Hacked](/pages/web_cloud/web_hosting/cms_what_to_do_if_your_site_is_hacked)".
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Your website is making numerous external connections (APIs, updates, HTTP calls, etc.). This could indicate a malfunction. To understand and resolve these anomalies, consult our guide:
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[Use Case - Recommendations After Your Website is Hacked](/pages/web_cloud/web_hosting/cms_what_to_do_if_your_site_is_hacked)
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**Once the cleanup is complete**, refer to the section "[Lift Security Measures](#lift-security-measures)" below.
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**Once the cleanup is complete**, refer to the section "[Lift security measures](#lift-security-measures)" below.
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### Lift Security Measures <a name="lift-security-measures"></a>
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### Lift security measures <a name="lift-security-measures"></a>
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> [!warning]
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>
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> Perform this step **only after applying the recommendations above** (diagnosis, corrections/updates, security hardening). If abnormal activity is detected again during a subsequent scan, **security measures will be automatically reactivated**. You will receive a new notification, and the blocks will remain in place until the **situation is permanently resolved**.
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1. Log in to your [OVHcloud Control Panel](/links/manager), go to `Web Cloud`{.action}, then click on your web hosting.
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2. An **alert window** appears: `"Abnormal Activity on Your Hosting"`. If you click the `Later`{.action} button, an **alert banner** `"Abnormal Activity Detected"` appears at the top of the page. Click `Learn More`{.action} to reopen the alert window.
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2. An **alert window** appears: `Abnormal Activity on Your Hosting`. If you click the `Later`{.action} button, an **alert banner** `Abnormal Activity Detected` appears at the top of the page. Click `Learn More`{.action} to reopen the alert window.
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3. **Check** the box: `I confirm I have performed all necessary actions to resolve the issue`.
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4. Click `Lift Security Measures`{.action}.
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5. A **confirmation banner** appears at the top of the page: `Your hosting is being analyzed to lift the security measures.` Track progress by clicking the link `View Ongoing Tasks`{.action} or directly from the `Ongoing Tasks`{.action} tab.
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>
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> Ensure your service is **eligible for automatic unblocking** (certain statuses do not allow immediate lifting of measures).
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## Go Further
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## Go further
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[How to Secure a Website?](/pages/web_cloud/web_hosting/secure_your_website)
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[How to secure a website](/pages/web_cloud/web_hosting/secure_your_website)
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For specialized services (SEO, development, etc.), contact [OVHcloud partners](/links/partner).
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If you need assistance with the use and configuration of your OVHcloud solutions, please consult our various [support offers](/links/support).
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If you would like assistance using and configuring your OVHcloud solutions, please refer to our [support offers](/links/support).
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Discuss with our [user community](/links/community).
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Join our [community of users](/links/community).

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