Apple has issued an emergency software update after a cyber-surveillance company created invasive spyware that could infect any iPhone, iPad, Apple Watch, or Mac Computer. Toronto-based internet watchdog security group Citizen Lab said that NSO, the surveillance company which is an Israeli spyware company, developed the tool with a technique that could easily exploit Apple software.

Ransomeware can be a company’s worst nightmare. It’s not simply “getting a virus” or “clicking on a malicious email.” It is a systematic plan created by hackers to take your private information. Once they have a foothold in your private data, they use their position to blackmail you into submitting a payment. Technology to prevent ransomware has gotten better but attackers have gotten smarter and more methodical.

Throughout July and August, Kaseya released a slew of patches for this vulnerability. Bitdefender released a universal decryption key that they developed by working with law enforcement. That key, with instructions, is available to organizations that have been impacted by the attack. Although REvil popped back online after nearly two months of silence, this vulnerability is no longer a threat due to vendor patches and a widely available decryption key.