- I know for sure that I do have a MITM hacker - if I surf without encrypting the Internet connection very quickly invalid site SSL certificate errors follow and pages are rewritten. With iVPN (http://ivpn.net) at least (and probably the other VPNs if their procedures for setting the openvpn passphrase/cert were as bulletproof as iVPN's) the only problem I have is with the SELinux sandbox and firefox. Also it is more than a co-incidence that as I write this email this hack occurs (the mouse is locked into the sandbox window at this moment), or likewise when I post to the unix.com or fedora security forums (having worked fine all day otherwise).
- It looks like there possibly is a correlation between entering text into a textbox and this happening, mostly after I have posted the text to the Internet, but sometimes as I am typing. The mouse will sometimes and somewhat less frequently unlock itself from the sandbox (i.e., the pointer can freely move around the desktop again). (Something also that might be related and that has just started today, the mouse pointer vanishes when over a button or link - but not in all sandbox windows, just the odd one.)
- I've done my damnedest to rule out any kind of malware on the install (ref. link above to the fedora forum post).
- The same problem occurs with metacity and openbox window managers, the former both as the X wm and sandbox '-W' wm.
- I will at some point do a backup and run the browser out of the sandbox, I've a feeling that whatever this is allows this hacker into root and to trash the install.
- I will at some point rule an openvpn bug out by trying a L2TP connection.
- Any malicious code surely has to run through the browser, chromium unfortunately will not run in a default sandbox so I can't at the moment compare the security of this browser.
- I'm working on the basis at the moment that local crime -- this is very much a local crime problem -- can 'see' my browser, but it could equally be a TEMPTEST problem as a browser hack (I will make some checks on the former sometime, but I can't be absolutely conclusive on this).
Not being a network engineer I can't really go much further than the above - I have some long dead Netware skills but otherwise was essentially trained as a programmer.
G.
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