In light of the recent developments on the possibilities on exposure of the financial information of bitcoin payments thought to be anonymous by the LN is rather a thing to be cautious of and adhered to when there is a warning such as this one.
Having delayed and chocked up payments were some the reasons for proposing the Lightning Network to improves in the areas speed, affordability and privacy of bitcoin payments while ensuring anonymity by broadcasting transactions off the bitcoin blockchain and routed in encrypted communications. According to a report in January from cryptocurrency exchange BitMEX, 72.2 percent of Lightning Network channels are publicly announced, and 27.8 percent are kept private.
With the advent of cyber attacks haven't been found to improve on in it's technicalities and schemes, researchers warns in March-April academic publications of the possibilities of a straightforward cyber attack which might infiltrate on unravel balances, first and third parties datas on the Lightening Network through a hidden pathway. According to Ania Piotrowska a University of London Cryptographer, the Lightning Network opens the door for various attacks,”.
https://www.coindesk.com/researchers-surface-privacy-vulnerabilities-in-bitcoin-lightning-network-paymentsThis is rather dangerous, considering what is going on in the current kuCoin-exchange hack and other detrimental effects associated with privacy let loose.
The said date 20 Oct., Which I believe to be the day set aside to announcing the found vulnerability in the V.0.10 and below is going to raise the stakes on vulnerability high and would be a rather dangerous situation for those yet to upgrade to the said V.0.11 and all. Hence, the likelihood of the claim should be checked and appropriate measures put in place to ensure a tight security.