pull down to refresh

0 sats \ 2 replies \ @mega_dreamer OP 6 Jan \ parent \ on: 🚨 Important Announcement from Predyx 🚨 oracle

Possibly multiple IPs. But we also have rate-limit per user-id to mitigate the multiple IPs.

Yes they are able to sell same shares multiple times. We use mongodb with transaction locking. Maybe we need to switch to a transactional db like MySQL or Postgres.

write
preview
100 sats \ 1 reply \ @ek 6 Jan
But we also have rate-limit per user-id to mitigate the multiple IPs.

Ah, sounded like you rate-limit the combination

Maybe we need to switch to a transactional db like MySQL or Postgres.

Sounds like the right move

reply
0 sats \ 0 replies \ @mega_dreamer OP 7 Jan

Yes, we're working on moving to Postgres.

We fixed the issue by queuing the request via RabbitMQ.

The hacker tried to perform the same attack within minute of us coming back online but failed, gave us a real-time feedback that our fix worked.

We're back online! Thanks for your support and advice.

reply