The most difficult and important thing for humans is making oneself understandable by partners, called honesty. The second most difficult and important thing for humans is making oneself not understable by non-partners, called security. A break in security is called intelligence.
In society at large, business and politics, intelligence is all and honesty considered a character flaw. For society in the small, friends and family, honesty is all and intelligence a threat.
The internet is society at large. On the internet you need intelligence of others and non-intelligence of yourself, you need security, you need to use secure passwords, you need to take personal responsibility and not rely on
The internet is not your family nor friend.