Dear Users,
On Oct 26, Sunday, there's a data error on our ticker API where the USD bid price was unreasonably high. Our production support team conducted a thorough investigation of the trades, cache, and account activities during that period, and found it was caused by a very rare caching problem. Some stale incorrect data was stuck in the cache for the ticker API and was not cleaned up in time.
Note that the actual orderbook and trades were NOT affected. All the trades during that period were normal. There was NO flash crash. Even if somebody attempted an attack during that period, no harm could have been done to the market.
That being said, we take this incident very seriously and patched our system to stop this rare problem from happening again. We are dedicated to creating a fair and secure marketplace for all bitcoin participants, and we are constantly improving our system, technology, and processes to safeguard your assets and personal information. We apologize for any inconvenience this incurred.
Thank you for choosing LakeBTC.com!
https://www.lakebtc.com/p/7112?locale=en 
