2025 was a big year for cybersecurity, with major cyberattacks, data breaches, threat groups reaching new notoriety levels, and, of course, zero-day vulnerabilities exploited in incidents.
Some stories, though, were more impactful or popular with our readers than others.
Below are fifteen of what BleepingComputer believes are the most impactful cybersecurity topics of 2025, with a summary of each. These stories are in no particular order.
Tim and I are taking a few days off, so enjoy the holidays with your loved ones .
The latest issue of the Internet Protocol Journal mixes technical thinking with some big-picture debates about where the Internet is headed. It kicks off with the editor’s notes and then dives straight into security and governance topics, including an article on how to protect a truly borderless Internet. A major theme in this issue is Internet governance, highlighted by two opposing pieces that ask whether the traditional “multistakeholder” model is breaking down—or if reports of its death are greatly exaggerated.
Beyond those heavier discussions, the issue also slows things down a bit with a thoughtful book review of Geopolitics at the Internet’s Core, which looks at how global politics shape the Internet’s infrastructure and decision-making. There’s also a memorial piece honoring Fearghas McKay, recognizing his impact on the networking community. Shorter sections like Fragments and Thank You! add some lighter, reflective moments between the more serious articles.
Overall, this IPJ issue strikes a nice balance between deep technical insight and broader reflections on policy, security, and the people behind the protocols. It’s a solid read for anyone who wants to stay informed not just about how the Internet works, but how it’s governed—and where it might be headed next.
click here or the above image for this issue
