The question of whether you need antivirus software in 2025 is one I get asked a lot, and honestly, it's not as straightforward as it used to be. Ten years ago, I'd have said "absolutely yes" without hesitation. But things have changed.
Modern operating systems have become much more secure. Windows, macOS, and even Android and iOS now come with pretty decent built-in security features. Windows Defender, which was once the laughing stock of security software, is now actually quite good. Apple's systems have always been relatively secure (though not immune to threats, contrary to what some Apple fans might tell you).
So do you need additional antivirus software? Well, it depends.
If you're someone who sticks to mainstream websites, doesn't click on random links in emails, and generally practices good digital hygiene, the built-in protections might be enough. Every day's a school day though, and even tech-savvy people can get caught out occasionally.
There's also the question of what you're protecting. If you're a business with sensitive customer data, or if you're working with financial information, then additional security layers are absolutely worth the investment. Better safe than sorry, as they say.
For the average home user, I'd say a good middle ground is to use the free versions of reputable antivirus software as an extra layer of protection, alongside your built-in security. Brands like Avast and Malwarebytes offer decent free tiers that won't bombard you with too many annoying popups.
What's most important, however, is your own behaviour. No antivirus can protect you from yourself. Be careful what you download, keep your software updated, use strong unique passwords (get a password manager!), and enable two-factor authentication wherever possible.
In the end, antivirus is a bit like an umbrella in Cornwall – you might not need it every day, but you'll be glad you have it when the weather turns.