With all the hype over data privacy laws here in Europe (GDPR, which stands for General Data Protection Regulation), I can see where non-technical people get confused over using data to refer to integrated circuit data instead of personal data.
The best replacement word I can think of would be "bytes", e.g. "Uploading 12 MB of random bytes..."
To a non-technical person, they will more likely see the word "bytes" as technical jargon than personal data. Even if they Google (or Bing) the keyword "Bytes", the search results will not be about organisations collecting data, privacy, regulations, etc.