There’s vastly more malicious code now than there was back then. Every company that has an online presence is constantly under attack. Constantly. There isn’t an IPv4 address that exists that isn’t scanned and have an attempt at hacking performed within seconds of being connected.

Not only that but today’s malicious code is much better at what it does with hundreds of amazing features and methods of branching out using different attack methods. Today’s malware is so good it updates itself very carefully/as secretly as possible so that some old compromised machine that no one thinks about anymore can become the next vector of attack inside your network.

All it takes is one active vulnerability

Keep all your shit up to date, people! When was the last time you checked your router to see if it had updates? Hmm‽