ST. PETERSBURG, Fla. — Two cyber security threats are making headlines this week.

Sen. Marco Rubio posted a tweet from a fake account created to look like his.

Rubio wanted people to know we'll be seeing a lot more of this with the upcoming elections.

“Want to know what a #Putin disinformation campaign looks like? The image below is a fake. No such tweet exists,” Rubio tweeted. “But #Russia created this realistic looking image & then had it posted online in blogs & fringe news sites. And this is minor compared to what lies ahead for us.”

A second incident involved Riviera Beach in South Florida.

A cyber extortionist requested $600,000 worth in bitcoin ransom.

In the ransomware hack, officials voted this week to pay it.

A city employee clicked on a malicious email link three weeks ago.

Prevention against the cyber threats is becoming increasingly difficult because society is usually chasing technology.

There is a common thread between the two, according to USF’s Center for Cyber Security Professor Nathan Fisk.

He said the same mistakes that lead to a hack can also lead to capturing the hacker.

"There are significant human vulnerabilities,” explained Fisk.  “When we catch these guys, frequently it's that they slipped up somewhere that they've bragged about what they did online somewhere that they've moved the money to the wrong place some way."

Fisk also recommended to prevent being had or hacked with these kinds of cyber threats update technology, be aware of and never trust links and messages if you don't know who and where they coming from.