June 23 (Reuters) - Canada's BlackBerry Ltd beat Wall Street estimates for first-quarter revenue on Thursday, helped by rising demand for its cybersecurity services amid an industry-wide shift to hybrid working.

Revenue fell 3.4% to $168 million for the quarter ended May 31, from $174 million a year earlier, but topped analysts' average estimate of $160.7 million, according to IBES data from Refinitiv. (Reporting by Akash Sriram in Bengaluru; Editing by Vinay Dwivedi)