Viruses, probably (if you're talking about software)
hackers
If a hacker has access to information like your Social Security or bank account information etc from your personal computer - what would happen? The same kind of threat can happen if someone gains unauthorized access to data from a database.
Review stored disaster supplies and replace items that are outdated.
The greatest threat to the spirit bear is Cole
The greatest threat depends on your perspective. From that of the everyday Joe, like poor Winston, the greatest threat is a total annihilation of personal freedoms, of which there are few left. This means to him a lack of emotion. For the government, the greatest threat is freedom from the government. The ability to fend for oneself is terrifying to a group so much concerned with power. Also, you really should read the book. There's sex and violence and hive-minded oppression. It's quite good.
It is us the Filipino who is the most greatest threat of Filipino Nationalism
The greatest threat to numbats would be the fox, an introduced species. It is closely followed by feral cats in the threat it poses to numbats.
The greatest threat to the stability of the slave families is that the family members were separated from the rest.
Humans
Your computer is vulnerable by the protection of your firewall. If your firewall is open, or have no firewall, you are pretty much a siting duck. A computer threat is a virus that infects your computer to do unwanted and/or involuntary actions you did not request/intend/mistakenly do. The computer threat seeks for openness of a computer vulnerability.
The hyaena
turtles