A Port St. Lucie man who markets himself online as a “demonologist” and “Grey Hat Hacker” is back in custody after allegedly exposing women’s private information in TikTok videos and bragging on camera that he could track their locations through their phones.
Mark Stephen Asea, 36, was booked into the St. Lucie County Jail on September 30 on a felony charge of offense against computer users. His bond was set at $35,000, according to sheriff’s office records.
This is not Asea’s first run-in with the law over these allegations. He was originally arrested in April on stalking and computer-related charges, but prosecutors dropped those charges in May. The case was reopened on September 24, and a new computer-access charge was filed days later.
According to the police affidavit, two women say their private information turned up in Asea’s TikTok posts. One of them had let him into her devices to fix a computer problem — then says he turned around and used that access against her.
‘Let’s Talk About Your Actual Password’
A detective reviewed a video in which Asea allegedly recited details about one woman’s devices and claimed to know her recent purchases.
“Let’s talk about your actual password. How about we talk about the last 10 purchases you made online?”
The woman told investigators she had only shared that password inside a closed TikTok group chat. Asea was not a member, she said — though she suspected he may have gotten in using a fake account. Nobody in that chat had permission to share the password outside the group, she said, and she had no idea how he could have obtained her phone ID or banking information.
A Tech Favor Turned Into Alleged Surveillance
The second woman’s trouble started after what began as ordinary tech support. She told police she let Asea remotely access her computer in October 2025 to fix an application issue. Months later, she said, he claimed he had planted a virus on her machine while she was in the bathroom, giving him the ability to view her information without her knowledge. She said she never authorized that.
A photo from a private Telegram message on her phone later allegedly showed up in one of Asea’s TikTok posts. He claimed in a comment it had come from WhatsApp, the affidavit states — but the woman gave investigators a screenshot proving the image came from Telegram.
Investigators also documented Asea appearing to brag about tracking her location through her device.
“Thanks to the GPS within her phone, but what did I do?”
Police say Asea posted more than 100 TikTok videos referencing one of the women, at times uploading as many as six in a single day. He also allegedly ran a website where he posted a photo of her getting a tattoo.
A Shifting Online Identity
Asea’s current TikTok bio lists “Demonologist,” “Clairsentient,” “Empath,” “PTSD,” “Grey Hat Hacker” and “Woodsman.” An earlier version documented in the April affidavit described him as a “former satanist” and “cybersecurity engineer.”
Asea also faced a separate civil stalking protection case over the summer. A woman obtained a temporary injunction in July, but a judge dissolved it and dismissed the case on September 8.
Court records provided do not explain why the original charges were dropped in May or what led prosecutors to revive the case in September. Asea is scheduled to be arraigned on November 19.
