I got a card with a text from a software company, and it tells me to decode it.
The only thing written on the card is the following code:
Might be Java related
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The string is base 64 encoded, decoding gives:
/dpn gives a further clue how it needs to be deciphered; if you take the previous character in the ASCII table you get
.com. Substituting each letter with the previous letter in the ASCII table gives the following email address. I have replaced @ with (at) to avoid email scrapers abusing this address.