How were they able to make such a small device in 1976 for keylogging an electric IBM typewriter? [closed]

Source: https://en.wikipedia.org/wiki/IBM_Selectric_typewriter

In 1984, bugs were discovered in at least 16 Selectric typewriters in
the US Embassy in Moscow and the US Consulate in Leningrad. The highly
sophisticated devices were … Continue reading How were they able to make such a small device in 1976 for keylogging an electric IBM typewriter? [closed]

What steganographic techniques can I use in images that survive lossy compression?

Learning a bit about IT security, a segment of the material was the basics of steganography – specifically, hiding information in the lowest significance bits of images, and converting images into sounds. For the first it occurred to me th… Continue reading What steganographic techniques can I use in images that survive lossy compression?

How are websites actually mititating BREACH? (HTTPS + compression)

After reading some popular questions and answer on this website about BREACH, the only advice seems to be: don’t compress anything that might contain secrets (including CSRF tokens). However, that doesn’t sound like great advice. Most webs… Continue reading How are websites actually mititating BREACH? (HTTPS + compression)