Experts Explain the Mystery Behind the Abundance of Equals Signs in Epstein’s Emails
Many of the emails released during the investigation into Jeffrey Epstein are filled with jumbled symbols that have sparked various conspiracy theories suggesting they might be some sort of coded language. However, the truth is likely much less exciting: these symbols are probably just artifacts from the Department of Justice’s process of converting the emails into PDFs.
According to Chris Prom, a professor and archivist at the University of Illinois Urbana-Champaign, “The glyphs and symbols are probably some artifact of a poor conversion process.” These symbols appear to be remnants of Multipurpose Internet Mail Extensions (MIME), a standard that has been around for about 30 years, designed to encode emails. Since email protocols transmit messages as short strings of simple ASCII characters, MIME was created to handle longer messages with formatting and symbols.
In MIME, the “=” character indicates that a string of text should be split for transmission and then rejoined, or, when followed by two additional characters, that it should be converted to a specific non-ASCII character. For instance, if you wanted to include “=” in an email, it would be encoded as “=3D.” Typically, the recipient’s email client decodes these symbols before displaying the formatted message.
Peter Wyatt, the chief technology officer of the PDF Association, noted that the software used by the Department of Justice to extract and convert the emails likely mishandled some of the decoding. “It was in the news, and it was a whole lot of PDFs,” he explained, mentioning that the association has conducted similar analyses on other high-profile documents. “Generally speaking, we’re interested in anything to do with PDF. That’s kind of what we do and what we’re about.”
Wyatt observed that the clarity of the text and URLs suggested these documents were digitally extracted and then converted to PDF, rather than being printed and scanned, as was the case with other reports. “So things have improved since that time,” he added.
It seems the Department of Justice extracted the email data, converted it to PDF, and then redacted it. To ensure the redactions were permanent and the metadata was stripped, they likely converted the documents to image files like JPEG before converting them back to PDF. This process may have resulted in capturing parts of the underlying MIME format without properly decoding it. In simpler terms, the emails were partially decoded, converted to PDF, then to JPEG, and finally back to PDF.
This explains the abundance of “=,” but it doesn’t clarify why “=” sometimes replaces letters, such as the “J” in “Jeffrey.” Experts agree that email conversion is complex, and the Department of Justice was handling a large volume of documents quickly, which may have led to inconsistencies in redactions.
Prom suggested that this could be a character set conversion issue, which he often encountered when the archival tool he was testing couldn’t locate the specific character set or font used by the email server. Craig Ball, a forensic examiner and educator at the University of Texas at Austin School of Law, pointed out that different email clients implement standards in slightly different ways, complicating the conversion process. “My hunch is that this is an incompatibility between the code pages used by the transmitting mail client (possibly a BlackBerry) and the application used to print the messages to PDF,” Ball noted. The presence of BlackBerry and iPhone signatures in these emails indicates that the messages passed through multiple systems with varying encoding practices, which likely compounded the decoding challenges during PDF generation.
“You’re looking at hundreds of different methods of converting these files from hundreds of different people using whatever software they had available to them, some of which might have been good, some of which might not have been,” Prom explained. “The PDF standard is quite complex,” he added. “And email to PDF is particularly fraught.”
