2026-03-04
Cloudflare is introducing Attack Signature Detection and Full-Transaction Detection to provide continuous, high-fidelity security insights without the manual tuning of traditional WAFs. By correlating request payloads with server responses, we can now identify successful exploits and data exfiltration while minimizing false positives....
2024-03-07
Announcing the General Availability of WAF Content Scanning, protecting your web applications and APIs from malware by scanning files in-transit...
2024-01-23
The issuance of Emergency Rules by Cloudflare on January 17, 2024, helped give customers a big advantage in dealing with these threats...
2021-12-15
This vulnerability is actively being exploited and anyone using Log4J should update to version 2.16.0 as soon as possible. Latest version is available on the Log4J download page....
2021-12-10
In this post we explain the history of this vulnerability, how it was introduced, how Cloudflare is protecting our clients. We will update later with actual attempted exploitation we are seeing blocked by our firewall service....
2021-12-10
A zero-day exploit affecting the popular Apache Log4j utility (CVE-2021-44228) was made public on December 9, 2021, that results in remote code execution (RCE)....
2021-12-03
Cloudflare can now send proactive notifications about any application security event spike, so you are warned whenever an attack might be targeting your application....
2021-10-08
On September 29th 2021, the Apache Security team was alerted of a path traversal vulnerability being actively exploited (zero-day) against Apache HTTP Server version 2.4.49. Customers running the affected Apache version, should update to 2.5.51 as soon as possible....
2021-09-08
On August 25, 2021, Atlassian released a security advisory affecting their Confluence application. The Cloudflare WAF soon after started mitigating an increase in malicious traffic to vulnerable endpoints ensuring customers remained protected....
2021-07-01
Today, we are making our Account Takeover Protection capabilities available to all paid plans at no additional charge....
2021-03-07
Cloudflare has deployed managed rules protecting customers against a series of remotely exploitable vulnerabilities that were recently found in Microsoft Exchange Server. ...
2021-02-19
Allowing users to securely log parts of the request that match firewall rules while making it impossible for anyone else to decrypt....
2020-12-11
Allowing logging for payloads that trigger the Web Application Firewall has always led to end-user privacy concerns. We built encrypted matched payload logging to solve this!...
2020-07-07
Cloudflare has deployed a new managed rule protecting customers against a remote code execution vulnerability that has been found in F5 BIG-IP’s web-based Traffic Management User Interface (TMUI)....
2019-03-05
Drupal discovered a severe vulnerability and said they would release a patch. When the patch was released we analysed and created rules to mitigate these. By analysing the patch we created WAF rules to protect Cloudflare customers running Drupal....
2018-10-03
Threat landscapes change every second. As attackers evolve, vulnerabilities materialise faster than engineers can patch systems becoming more dynamic and devious. Part of Cloudflare’s mission is to keep you and your applications safe....
2018-04-20
Cloudflare’s team of security analysts monitor for upcoming threats and vulnerabilities and where possible put protection in place for upcoming threats before they compromise our customers....
2018-03-29
Drupal has recently announced an update to fix a critical remote code execution exploit (SA-CORE-2018-002/CVE-2018-7600). This patch is to disallow forms and form fields from starting with the “#” character....
2016-05-17
From time to time a customer writes in and asks about certain requests that have been blocked by the CloudFlare WAF. Recently, a customer couldn’t understand why it appeared that some simple GET requests for their homepage were listed as blocked in WAF analytics....
2016-05-09
Very early on in the company’s history we decided that everything that CloudFlare does on behalf of its customer-base should be controllable via an API. In fact, when you login to the CloudFlare control panel, you’re really just making API calls to our backend services....
