In our October SIMformation we start with breaking news of a vulnerability in the WPA Wi-Fi security protocol. The "KRACK Attack" is a potential chink in protected Wi-Fi traffic, so this is an important update with steps to take for your PCs and router firmware. We also look at "Simming" – creating a synthetic identity from various "real" elements like names, addresses and social security numbers. This is why the Equifax data breach last month is a concern, as it gives the bad guys the way to construct a new identity – but if they happen to pick your SSN or name, your credit profile is at risk. And, since this was Cybersecurity Month, we follow up on the WannaCry ransomware attack this past summer, and what IT experts believe was behind this attack. We discuss how Windows 10 users can pick a different Internet browser as their default rather than using Edge, and also how Microsoft plans to release Office 2019 for those companies that do not wish to subscribe to Office 365. Finally, in an "oops" moment, a major accounting firm that markets cyber risk protection, found their Cloud-based e-mail system was hacked, exposing financial information and tax returns for clients.