Given a text, write a compressed version of it in a single sentence.
Q: One expert, whose job is so politically sensitive that he spoke on condition that he wouldn't be named or quoted, said the expected influx of East European refugees over the next few years will greatly increase the chances of computer-maintenance workers, for example, doubling as foreign spies.
A:
One expert, whose job is politically sensitive, spoke anonymously. He said the influx of East European refugees in coming years will increase the chances of workers doubling as foreign spies.