Starting today, Microsoft is opening the floodgates for hackers when it officially ends support for its popular Windows XP operating system. That means anyone with an older PC will be at a significantly higher risk of getting hacked or infected by viruses, spyware, banking Trojans and webcam “ratters” - as well as email phishing scams.

Jason Glassberg is co-founder of Casaba Security, a cyber-security firm that’s hired by major banks, Fortune 500s and government agencies to try to hack into their networks. They’re also part of Microsoft’s SDL Pro Network. He’s appeared on CNBC, CNN and HLN as a hacking expert.