Finding cybercrime before it happens is very hard however it's important for every individual to make sure they're reporting suspicious activities so there isn't a leak; some indicators of cyber-attacks are:
Major attack indicators
Phishing- Spam emails that trick recipients into doing something that undermines their security. The messages may contain infected attachments or links to malicious sites.
Malware- Warning signs include annoying ads, pop-ups, computer crashes, noticeable slowdowns, virus messages, browser redirection, diminished storage space, or disabled system tools.
Ransomware- malicious software that prevents you from accessing your computer files, systems, or networks. It demands you pay a ransom for their return.
DDoS attacks- programmed to overwhelm a network or website with traffic
Individual attacks
Emails that ask for personal or credit card information.
Requests for immediate action regarding unfamiliar situations.
Emails that include suspicious attachments.
Abnormally high system, network, or disk activity
Files have been unexpectedly encrypted
Program's running, turning off, or reconfiguring themselves
Emails sent automatically without the user's knowledge
Misusing personal information
when is the next major attack going to be?
Are we compromised now?
Internet of things, what can be easily penetrated?