A few days after the image went viral late last month, Briskman told her employer, government contracting firm Akima LLC, that she was the one who gave the commander-in-chief her middle finger unsheathed, as opposed to letting them find out through another source.
She gave President Trump's motorcade the finger - and now supporters are raising tens of thousands of dollars for her.
Titled "Thank You Juli Briskman", the crowdfunding page describes her as an "inspiration".
Briskman, a 50-year-old mother of two, was sacked the next day.
Briskman, 50, was riding her bike near her home in Sterling, Virginia on October 28 when the president's motorcade passed, having just left Trump National Golf Club. All proceeds of the $100,000 goal fund are expected to go to Briskman in an effort to alleviate any financial woes she may have.
Recalling the unlikely furore which took place on her standard cycling route, the mother of two said she became incensed when she set eyes on the U.S. president's motorcade coming up beside her.
"He was passing by and my blood just started to boil", she said. Only one-third of Puerto Rico has power.
Her gesture was captured by AFP White House photographer Brendan Smialowski who was riding in Mr Trump's convoy.
"Basically, you can not have "lewd" or "obscene" things in your social media. So they were calling flipping him off 'obscene'".
She said: "I was shocked and anxious about many things: How would I pay for healthcare?"
Despite losing her job, Ms Briskman said she did not regret the incident, adding "I'd do it again", and has since made the photo her profile and background picture on social media.
"I'm thinking DACA recipients are getting kicked out", Briskman told HuffPost.