Paranoid behavior involves a persistent, irrational mistrust or suspicion of others. Here are some examples:

1. Constantly Suspecting Others: A person might always suspect that friends, family, or coworkers are plotting against them, even without evidence.
2. Secrecy and Isolation: Someone displaying paranoia may isolate themselves and keep their thoughts and actions secret, fearing that others will use this information against them.
3. Reading Hidden Meanings: They may read hidden meanings or intentions into innocent comments or actions, often assuming that they are being criticized or insulted.
4. Excessive Security Measures: Taking extreme security precautions, such as installing multiple locks, cameras, or alarms, even if there’s no apparent threat.
5. Hoarding or Stockpiling: Paranoid individuals might stockpile food, money, or other resources, fearing that a catastrophic event is imminent.
6. Avoidance of Authority Figures: Avoiding authority figures like doctors or government officials due to fear of being controlled or manipulated.
7. Delusions of Persecution: Believing that they are the target of a conspiracy, harassment, or persecution, even when there’s no evidence to support this belief.
8. Accusations of Betrayal: Accusing others, often loved ones, of betrayal or disloyalty without substantial evidence.
9. Hostility and Aggression: Responding to perceived threats with hostility or aggression, which can strain relationships and lead to conflict.

It’s important to note that paranoid behavior can be a symptom of various mental health conditions, including paranoid personality disorder and schizophrenia. If you or someone you know is exhibiting paranoid behavior, it’s essential to seek professional help for an accurate diagnosis and appropriate treatment.