
Verify Apple devices with no installed software
Security teams that rely on Cloudflare Access can verify a user’s Apple device before they access a sensitive application — no additional software required
1,023 articles on Security.

Security teams that rely on Cloudflare Access can verify a user’s Apple device before they access a sensitive application — no additional software required

Today, we’re excited to announce Cloudflare One Observability. Cloudflare One Observability will help customers work across Cloudflare One applications to troubleshoot network connectivity, security policies, and performance issues to ensure a consistent experience for employees everywhere

Traditional SEG architectures were built for the email environments of yesterday. Learn how to seamlessly transition to cloud-native, preemptive email security

As part of our exciting journey to integrate Area 1 into our broader Zero Trust suite, Cloudflare Gateway customers can soon enable Remote Browser Isolation for email links. With Email Link Isolation, gain an unmatched level of protection from sophisticated multi-channel email-based attacks

Expand the completeness of your dependency graph by using the dependency submission API, which will create more comprehensive alerts on supply chain vulnerabilities

In this post I’ll exploit CVE-2022-22057, a use-after-free in the Qualcomm gpu kernel driver, to gain root and disable SELinux from the untrusted app sandbox on a Samsung Z flip 3. I’ll look at various mitigations that are implemented on modern Android devices and how they affect the exploit.

To combat the prevalence of malware in the open source ecosystem, GitHub now publishes malware occurrences in the GitHub Advisory Database. These advisories power Dependabot alerts and remain forever free and usable by the community.

Zack Deveau, Senior Application Security Engineer at Shopify, shares the details behind a recent contribution to the Rails library, inspired by a bug bounty report we received. He'll go over the report and its root cause, how we fixed it in our system, and how we took it a step further to make Rails more secure by upda

Last week, Cloudflare automatically detected and mitigated a 26 million request per second DDoS attack — the largest HTTPS DDoS attack on record

The Rust community can now discover, report, and prevent security vulnerabilities.

UTC Atlassian released a Security Advisory relating to a remote code execution (RCE) vulnerability affecting Confluence Server and Confluence Data Center products.

On June 02, 2022 Atlassian released a security advisory for their Confluence Server and Data Center applications, highlighting a critical severity unauthenticated remote code execution vulnerability.

Learn how you can securely manage users with the latest ships for GitHub Enterprise.

GitHub Enterprise Server 3.5 is available now, including access to the Container registry, the addition of Dependabot, enhanced administrator capabilities, and features for GitHub Advanced Security.

npm’s impact analysis of the attack campaign using stolen OAuth tokens and additional findings.

A two-part story about how GitHub’s Product Security Engineering team rolled out Dependabot internally to track vulnerable dependencies, and how GitHub tracks and prioritizes technical debt.

It was another record year for our Security Bug Bounty program. We’re excited to highlight some achievements we’ve made together with the bounty community from 2021!

Upgrade to GHES 3.2 or newer by June 3rd to continue using GitHub Connect.

With innersource, it’s important to measure both the amount of innersource activity and the quality of the code being created. Here’s how.

We’re excited to announce the availability of Network Analytics Logs for maximum visibility into L3/4 traffic and DDoS attacks


GitHub’s Information Security Management System (ISMS) has been certified against ISO 27001:2013, an internationally recognized standard for security program best practices.

Fixing third-party security issues and bloat takes collaborative work. We are open sourcing Managed Components, so everyone can use fast and secure third-parties, everywhere

The Cloudflare Bug Bounty has resulted in numerous security improvements to Cloudflare Pages

We’re taking a look at some of the most common security vulnerabilities and detailing how developers can best protect themselves.

GitHub will require all users who contribute code on GitHub.com to enable one or more forms of two-factor authentication (2FA) by the end of 2023.

These days software is subject to an ever-changing threat landscape. Check out the many ways you can keep your projects secure on GitHub today.

Earlier this month, Cloudflare’s systems automatically detected and mitigated a 15.3 million request-per-second (rps) DDoS attack — one of the largest HTTPS DDoS attacks on record

Do you worry that a CVE will hurt the reputation of your project? In reality, CVEs are a tracking number, and nothing more. Here’s how we think of them at GitHub.

Introducing CodeQL packs to help you codify and share your knowledge of vulnerabilities.

On April 12, GitHub Security began an investigation that uncovered evidence that an attacker abused stolen OAuth user tokens issued to two third-party OAuth integrators, Heroku and Travis-CI, to download data from dozens of organizations, including npm. Read on to learn more about the impact to GitHub, npm, and our users.

We are excited to announce that as of today, network security teams can procure and use Magic Transit, Cloudflare’s industry-leading DDoS mitigation solution, and Kentik’s network observability as an integrated solution

Welcome to our first DDoS report of 2022, and the ninth in total so far. This report includes new data points and insights both in the application-layer and network-layer sections — as observed across the global Cloudflare network between January and March 2022

Upgrade your local installation of Git, especially if you are using Git for Windows, or you use Git on a multi-user machine.

Data is among the most important things that make up a web application or a conventional native app. We need data to be able to see and perhaps understand the purpose of an application. In this article, we’ll look at another approach to obtaining data in an application that requires authentication or authorization using Next.js.

Ensuring secure access to your source code is more important than ever. Git Credential Manager helps make that easy.

Learn how to build packages with SLSA 3 provenance using GitHub Actions.

The new dependency review action and API prevents the introduction of known supply chain vulnerabilities into your code.

We want to take away the pain and effort of keeping your code secure, so check out how Dependabot empowers developers to keep to their projects secure.

Organizations with GitHub Advanced Security can now proactively protect against secret leaks with secret scanning’s new push protection feature.

From Jan. 2021 to Jan. 2022, more than 8.5 million (of 56 million in total) brand phishing emails blocked by Area 1 impersonated the World Health Organization

CVE-2022-1096 is yet another zero day vulnerability affecting web browsers. Cloudflare zero trust mitigates the risk of zero day attacks in the browser and has been patched

Securing your projects is no easy task, but end-to-end supply chain security is more top of mind than ever. We’ve seen bad actors expand their focus to taking over user…

Learn who made the list of the top brands that attackers use in phishing lures. This bracket is based on an analysis of more than 56 million phishing emails blocked by Area 1’s solution in the preceding 12 months since Feb 2022.

Implementing a toy version of TLS 1.3

SaaS providers can now enable mutual TLS authentication on their customer’s domains through our Access product

Today at 03:30 UTC we learnt of a compromise of Okta. We use Okta internally for employee identity as part of our authentication stack. We have investigated this compromise carefully and do not believe we have been compromised as a result

In this post, we share some of the insights we’ve gathered from the 32 million HTTP requests/second that pass through our network

Today, we’re proud to report we are the fastest provider in 71% of the top 1,000 most reported networks around the world

If there’s one habit that can make software more secure, it’s probably input validation. Here’s how to apply OWASP Proactive Control C5 (Validate All Inputs) to your code.

Cloudflare has been hooked on securing customers globally since its inception. Our services protect customer traffic and data as well as our own, and we are continuously improving and expanding those services to respond to the changing threat landscape of the Internet

Starting today, you can build Zero Trust rules that require periodic authentication to control network access

Cloudflare is committed to bolstering our security posture with best-in-class solutions — which is why we often turn to our own products as any other Cloudflare customer would.

The security landscape is moving fast. We invited users to help us shape a new WAF experience that enables us to evolve WAF to meet their demands and use cases

The data we glean from attacks trains our machine learning models and improves the efficacy of our network and application security products, but historically hasn’t been available to query directly. This week, we’re changing that

Once the acquisition of Area 1 closes, we plan to give all paid self-serve plans access to their email security technology at no additional charge

Welcome to our first innovation week of the year: Security Week! In this post we will be going over Cloudflare’s security products’ history giving you an introduction to all the great announcements we have planned


A zero-day vulnerability in the Mitel MiCollab business phone system has recently been discovered (CVE-2022-26143). This vulnerability, called TP240PhoneHome, which Cloudflare customers are already protected against, can be used to launch UDP amplification attacks

A new reflection/amplification distributed denial-of-service (DDoS) vector with a record-breaking potential amplification ratio of 4,294,967,296:1 has been abused by attackers in the wild to launch multiple high-impact DDoS attacks