Tor is free and open-source software for enabling anonymous communication by directing Internet traffic through a free, worldwide, volunteer overlay network consisting of more than seven thousand relays in order to conceal a user's location and usage from anyone conducting network surveillance or traffic analysis.
As of 2012, 80% of The Tor Project's $2 million annual budget came from the United States government, with the U.S. State Department, the Broadcasting Board of Governors, and the National Science Foundation as major contributors. (Suspicious)
A cybersecurity analyst, using the pseudonym "nusenu," said in a report this week a hacker now controls approximately 23% of the Tor Network's exit relay capacity.
Exit nodes can be sniffed
The government has many ways to compromise the network
Brave browser was leaking Tor onion DNS requests
Windows DRM-protected multimedia files can deanonymize Tor Browser users and reveal their real IP addresses
Sources:(https://en.wikipedia.org/wiki/Tor_(anonymity_network),https://www.coindesk.com/tor-network-compromised-single-hacker-stealing-users-bitcoin-report,https://www.cactusvpn.com/vpn/is-tor-safe/)