do not have the wife issue but...
- install some virtualization software and run Whonix and route 100% of internet traffic through Tor; it protects cuz online trackers can identify you behind a VPN because odds are pretty high your browser fingerprint is pretty unique whereas with Tor, if used properly, everyone has the same browser fingerprint; unlike in real life viruses will probably be contained to the whonix instance so you can just delete and reinstall if infected; the os is password protected so you'll have a parallel, tor based operating system on top of Windows she can't access
Browser Fingerprinting: Explanation & Solutions (2019 Update)
- better yet, in a case where someone has access to your computer and funny software will result in an interrogation, boot Tails from a USB stick so there's no persistence on your hard drive and theres no sign of funny software installed that's going to raise questions
- if you insist on using Chrome on Windows 10 with extension a,b and c behind a VPN install a user-agent spoofer that doesn't track you and regularly change your user-agent profile (although if someone else is using your computer i suppose it could raise questions)
- very important not to use the same email address or username so accounts cant be linked or linked to your real identity (I once found a post from a buddy in high school who had posted on a small/obscure gaming forum that he was deeply concerned his 4-6 year old son was gay because he found him playing naked in the closet with some other boy
based solely on the fact he had a nickname posted on his Facebook page); if she found a username she could potentially link it to other forums without knowing what forums/social media to look at
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strictly segment your online activity: this is my real life box, this is my im 65 (or 45) but i like having orgies with skinny, big tittied, hard-bodied 20 year olds box; if there's any cross-contamination immediately drop your im 65 but like 20 year olds box and create a new one (new username, new email address, all signed up for from different IP address, ideally using different operating systems if you're not using Tails); better yet, subsegment your i like 20 year old hardbodies
i have a fake facebook account and it astounds me the number of dudes who appear to be using real accounts or fake accounts with real locations and publicly available, real pictures