Social networking sites

Questions:

• Are there any issues I should be aware of, to safeguard myself when using social networking sites such as Facebook/Twitter?
• How can I protect myself against online dating scams?
• Is it safe for my child to use a chatroom?
• Someone is posting false information about me on Facebook/Twitter/a social networking site. Is this a criminal offence?
• Someone is sending me threatening / abusive / offensive messages via a social networking site. Is this a criminal offence?
• What is computer hacking and how can I prevent it?
• What is cyberbullying?
• What is radicalisation and what are the warning signs to look out for?
• What is revenge porn and is it illegal?
• What is 'Zoom Bombing'?
• Where can I report a suspicious / phishing / scam email?