LONDON (Reuters) - HSBC said on Tuesday that customers affected by a blackout on its personal banking online services in Britain will not "lose out", as technical problems suffered by Europe's biggest bank ran into a second day.
In a statement apologizing for the faults, first reported on Monday, a spokesman said: "We are currently experiencing issues with our Online and Mobile banking. Personal Mobile banking is working but due to high demand customers may experience delays."
While the bank offered no explanation for the cause of the glitch, a spokesman confirmed the outage was not due to a Distributed Denial of Service (DDOS), a mechanism often used by cyber criminals trying to disrupt businesses and companies with significant online activities.
Business customers can still access online and mobile banking services, the bank said, but both were running at significantly reduced capacity following the outage.
The bank has not estimated when full service will resume but said its teams were working "non-stop" to restore the services and regular updates will be provided.
"We will ensure customers do not lose out as a result of this issue," the spokesman said.
Britain's retail banks have been hit by a number of technology failures in recent years, causing inconvenience for hundreds of thousands of customers and prompting lawmakers to call for more investment in financial technology.
State-backed Royal Bank of Scotland (L:RBS) promised to invest hundreds of millions of pounds in its computer systems after a series of high-profile glitches.
Its last significant outage in June last year led to delays in the processing of around 600,000 payments across its RBS, NatWest, Ulster Bank and Coutts businesses.
HSBC has previously had IT problems. Last year thousands of Britons failed to receive their wages on the Friday prior to a long holiday weekend, when some business customers were blocked from making payments.
HSBC shares were trading 0.3 percent down at 518.7 pence at 1125 GMT, compared with a 0.1 percent dip in the FTSE 100.