U.S. attorney Adrienne Lawrence said the images Kardashian shared on social media were clear examples of revenge porn. News: "We are taking this assault against Chyna very seriously and exploring all of the legal remedies available to my client at this time".
Rob Kardashian's revenge porn posts may not go without legal outcome.
The penalty is up to six months in prison and a $1,000 (£770) fine.
The state created a website in 2015 to help victims of revenge porn have unauthorized intimate images and other personal information removed from websites.
Kardashian's Instagram account has been shut down, but a source close to Chyna revealed that he "sent people over to her house to pick up things that don't even exist". And in my Mischa Barton case judge agreed it's a form of domestic violence.
In 2013, revenge porn was made a crime under the California Penal Code. Chyna gave birth to their daughter, Dream, in November.
Over time, the pair, who split up in December, have become famed for their explosive, tumultuous relationship.
Blac Chyna has broken her silence about Rob Kardashian leaking her photos on Instagram on Wednesday and she is threatening legal action. He also posted a video of Chyna, where she is seen having sex with another man.
This is from Chyna yesterday to me.
Kardashian's Instagram account was deactivated on Wednesday after he posted the pictures, which he then shared to Twitter. The reason it's illegal to share this type of image in the first place is because it violates that person's private rights, and even worse, has potential to cause them some type of personal harm.
Chyna previously denied that she and Jones were ever romantic, insisting that he was a "gay" former business contact who was trying to "extort" her.
Nonetheless Mosley is still advising Chyna how best to proceed, so she doesn't have to deal with Rob's Twitter fingers in the future.