Defense attorney Todd Blanche opened today's questioning by asked Cohen about his communication with reporters.

"Since that time [when your last testimony ended], how many reporters have you talked to?" Blanche asked.

Cohen said he's spoken to reporters "who called to say hello, to see how I'm doing," but that he didn't talk about the case.

"Didn't speak at all about your testimony last week?" Blanche asked.

"Correct," Cohen responded.

As Cohen resumed his testimony, jurors appeared attentive, with several taking notes. Trump sat slouched at his chair with his eyes closed.

Following the break, former Trump attorney Michael Cohen has entered the courtroom.

He took his seat in the witness box to resume his cross-examination as Trump looked on.

Defense attorney Todd Blanche asked to approach the bench about an ongoing discovery issue.

Both legal teams leaned in as Blanche spoke to the judge.

With the sidebar completed, the judge called for a ten-minute break.

Judge Merchan denied a request from defense lawyers to broaden the scope of testimony from their expert witness Bradley Smith, who is an expert on campaign finance regulations.

On Thursday, defense lawyers asked Merchan to allow Smith to testify about various terms related to federal campaign finance laws. Merchan denied the request, citing long standing precedent prohibiting witness testimony about the law.

"An expert is not permitted to present or interpret the law," Merchan said.

Merchan also expressed concerns about Smith's testimony prompting a "battle of the experts" between Smith and an expert called by prosecutors, which Merchan said would confuse the jury.

Merchan said that Smith could still testify, as long as he follows the limits imposed in his pretrial ruling on the case's motions in limine.

"The court will monitor this testimony closely to ensure full compliance," Merchan said in a pretrial ruling. "Any deviation from this ruling could result in sanction up to and including striking the expert's entire testimony."

Trump, sitting at the defense table, shook his head after the judge announced his ruling.

On redirect examination, Michael Cohen provided some background on the $30,000 he said he stole from the Trump Organization by overcharging them for work he did with Red Finch -- funds that were paid to him as part of the Stormy Daniels reimbursement payment.

"Red Finch is a technology company that I had asked to assist in a CNBC poll, and the poll was regarding the most famous businessmen in, like, the last century," Cohen said, speaking to the jury. "Mr. Trump's name was on that list and at the beginning of this poll he was polling toward the very bottom. It upset him, so he had me come to his office and he provided me with a sheet of paper."

"I reached out to Red Finch who told me he was able to create an algorithm to ensure that Mr. Trump would rise and rise significantly in this poll. We talked about what number Mr. Trump wanted to finish," Cohen said.

The jury sat in rapt attention as Cohen spoke.

Eventually Trump came in No. 9 but he declined to pay Red Finch because CNBC didn't bother following through with the poll, Cohen said. Cohen ended up paying them -- in a brown paper bag in cash, he said.

"You felt some pressure to make some payment to your friend? Hoffinger asked.

"Yes," Cohen responded.

Asked why he did it, Cohen said, "Well for a long time I had been telling him about the $50,000. ... I was angered because of the reduction in the bonus, and so I just felt it was almost like self help."

"I wasn't going to let him have the benefit this way as well," Cohen said, admitting that it was wrong.