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1 | 1 | --- |
2 | 2 | {} |
3 | | - |
4 | 3 | --- |
5 | 4 |
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6 | | -## Threat score |
7 | | - |
8 | | -The threat score measures IP reputation across Cloudflare services. This score is calculated based on [Project Honeypot](https://www.projecthoneypot.org/), external public IP information, as well as internal threat intelligence from our [WAF managed rules](/waf/reference/legacy/old-waf-managed-rules/) and [DDoS](/ddos-protection/about/). |
9 | | - |
10 | | -The threat score of a request has a value from 0 to 100, where 0 indicates low risk. Values above 10 may represent spammers or bots, and values above 40 identify bad actors on the Internet. |
11 | | - |
12 | 5 | ## Security levels |
13 | 6 |
|
14 | | -Security levels are based on the threat score (except *Off* and *I’m Under Attack!*). You can adjust the security level to challenge incoming requests based on the threat they pose. |
| 7 | +Security levels are based on the threat score (except _Off_ and _I'm Under Attack!_). You can adjust the security level to challenge incoming requests based on the threat they pose. |
15 | 8 |
|
16 | 9 | The available security levels are the following: |
17 | 10 |
|
18 | | - |
19 | | - |
20 | | -| Security Level | Threat score range | Description | |
21 | | -| ----------------------------------- | ------------------ | ------------------------------------------------------------------------------------ | |
22 | | -| Off (Enterprise<br/>customers only) | *N/A* | Does not challenge IP addresses. | |
23 | | -| Essentially off | 50–100 | Only challenges IP addresses with the worst reputation. | |
24 | | -| Low | 25–100 | Challenges only threatening visitors. | |
25 | | -| Medium | 15–100 | Challenges both threatening and moderately threatening visitors. | |
26 | | -| High | 0–100 | Challenges all visitors that exhibited threatening behavior within the last 14 days. | |
27 | | -| I’m Under Attack! | *N/A* | Only for use if your website is currently under a DDoS attack. | |
28 | | - |
29 | | - |
| 11 | +| Security Level | Description | |
| 12 | +| ----------------------------------- | ------------------------------------------------------------------------------------ | |
| 13 | +| Off (Enterprise<br/>customers only) | Does not challenge IP addresses. | |
| 14 | +| Essentially off | Only challenges IP addresses with the worst reputation. | |
| 15 | +| Low | Challenges only threatening visitors. | |
| 16 | +| Medium | Challenges both threatening and moderately threatening visitors. | |
| 17 | +| High | Challenges all visitors that exhibited threatening behavior within the last 14 days. | |
| 18 | +| I'm Under Attack! | Only for use if your website is currently under a DDoS attack. | |
30 | 19 |
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31 | 20 | Selecting a higher **Security Level** value means that even requests with a lower risk (that is, with a low [threat score](#threat-score)) will be challenged. Selecting a lower **Security Level** value means that only requests posing a higher risk (that is, with a high threat score) will be challenged. |
32 | 21 |
|
33 | | -Security levels from *Essentially off* to *High* will challenge the visitor using a Managed Challenge. When you select *I'm Under Attack!*, which enables [I'm Under Attack mode](/fundamentals/reference/under-attack-mode/), Cloudflare will present a JS challenge page. |
| 22 | +Security levels from _Essentially off_ to _High_ will challenge the visitor using a Managed Challenge. When you select _I'm Under Attack!_, which enables [I'm Under Attack mode](/fundamentals/reference/under-attack-mode/), Cloudflare will present a JS challenge page. |
34 | 23 |
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35 | 24 | :::caution |
36 | 25 |
|
37 | | -Only use [I'm Under Attack mode](/fundamentals/reference/under-attack-mode/) when a website is under a DDoS attack. I'm Under Attack mode may affect some actions on your domain, such as your API traffic. |
| 26 | +Only use [I'm Under Attack mode](/fundamentals/reference/under-attack-mode/) when a website is under a DDoS attack. I'm Under Attack mode may affect some actions on your domain, such as your API traffic. |
38 | 27 |
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39 | | -To set a custom security level for your API or any other part of your domain, create a [configuration rule](/rules/configuration-rules/). |
| 28 | +To set a custom security level for your API or any other part of your domain, create a [configuration rule](/rules/configuration-rules/). |
40 | 29 | ::: |
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