Cyberattacks are evolving fast, and one of the biggest threats on the horizon is ransomware that doesn't just take over your files but could directly attack your computer’s processor.
Usually, ransomware blocks access to your files or system until you pay money to get control back. But in the future, attackers might go deeper and mess with your computer’s central processing unit (CPU) — the part that controls everything your computer does.
This new kind of attack could change how your CPU works by tampering with a hidden set of instructions inside the chip, called microcode. These instructions are installed by companies like Intel and AMD and can only be updated by them. They help your CPU run smoothly and securely. If criminals figure out how to replace this microcode with harmful code, they could take over your computer entirely.
Although this might sound like science fiction, it's starting to become more real. Researchers recently found a way to insert custom code into an AMD processor by using a flaw. They managed to change how the CPU handles random numbers — a small change, but proof that deeper control is possible.
A cybersecurity expert from Rapid7 has even created a working example of this type of attack. While it's not being shared publicly, it shows that this type of threat may not be far off. Once such ideas are out in the open, it's only a matter of time before bad actors attempt to use them.
Some tools already exist that allow hackers to sneak malicious programs into the firmware — the part of your computer that runs before the operating system loads. These tools are sold online and used by cybercriminals to secretly gain access to computers.
Right now, there are no known real-world attacks that target the CPU in this way, and it may still be years before it becomes a serious problem. However, it’s smart to be prepared.
Here’s how you can reduce your risk:
1. Keep your BIOS and firmware updated regularly, since companies release updates to fix problems.
2. Use reliable antivirus software to catch other types of ransomware early.
3. Don’t open unknown emails or click suspicious links.
4. Only install programs from websites you trust.
While this type of ransomware isn't common today, the fact that it's possible means we should stay alert. Updating your system and being cautious online are simple steps that can go a long way in keeping your device safe.
