Red flags to watch out for in online communications include:

1. Suspicious links: URLs that are suspicious or odd, or have a different extension, such as .onion, instead of .com.

2. Unfamiliar or unusual emails: Emails that originate from an unknown source, use an unfamiliar or technical language, or have a suspicious, long subject line.

3. Requests for personal information: Phishing emails asking for personal information, passwords, banking account information, etc.

4. Implementing safety measures: Making sure all communication is encrypted, being careful who you share personal information with, and using strong passwords.

5. Being wary of spoofed addresses: Looking closely at the sender’s address to make sure it’s coming from an expected source, and not an impostor.