Developers Ben Carman and Toni Giorgio found a "doomsday scenario" in which the effectiveness of blind routes would be reduced, an update that would be implemented on Bitcoin's Lightning network in the short term.
An LN Markets article by Fanis Michalakis explains the weak spot that Carman and Giorgio discovered around blind routes. The post first explains that blind routes aim to improve privacy on the Lightning Network by hiding half of the payment route from each of the participants.
In other words, with blind routes the sender builds one half of the route and the receiver the other half. Both only see part of the path that bitcoins (BTC) follow, which includes only the journey to the nearest node.
However, the developers emphasize, this can be qualified by establishing a “surveillance network.” This is a set of nodes that, due to their proximity to the receiver, have a high probability of routing payments. In this way, a trap could be set for the issuer, in which its data would be exposed, as is currently the case with transactions of this second layer of Bitcoin used for instant payments.
