Government agencies have now been ordered by CISA (the Cybersecurity and Infrastructure Agency) to patch the Windows flaw that hackers are actively exploiting, escalating the urgency beyond Microsoft's initial patch release. Security firms including Malwarebytes and Qualys have published detailed reviews of the April 2026 Patch Tuesday updates, confirming the two zero-day vulnerabilities (previously unknown security flaws) were among the most critical fixes released.
Microsoft just released a massive security update that fixes 160 vulnerabilities in Windows and other software. Two of these flaws were zero-day vulnerabilities (security holes that hackers discovered and started using before Microsoft even knew about them). This matters because hackers were already stealing data from real companies using these weaknesses.
Think of your computer like a house with locks on the doors. Microsoft just found 160 broken locks—including two that burglars were actively using to break in. The company issued new locks (software updates) to fix the problem. The longer you wait to install these updates, the longer your doors stay broken.
Who got hit? Federal agencies were targeted first, which is why the Cybersecurity and Infrastructure Security Agency (CISA)—the U.S. government's hacking defense team—ordered all government computers to patch immediately [BleepingComputer]. But these vulnerabilities affect millions of regular Windows users too.
What you should do today:
First, check for updates on your computer right now. On Windows, go to Settings > Update & Security > Check for updates. On a Mac, click the Apple menu > System Settings > General > Software Update. Install everything it offers.
Second, turn on automatic updates so you never miss a patch again. You shouldn't have to think about this—let your computer do the work while you sleep.
Third, use a password manager (like Bitwarden or 1Password) to create unique, strong passwords for every website. Even if hackers find one password, they can't get into your other accounts.
The bottom line: These updates exist because hackers are constantly looking for holes in your defenses. Patching takes 10 minutes. Recovering from a hack takes months and thousands of dollars. The choice is simple.