This is an automated archive made by the Lemmit Bot.

The original was posted on /r/monero by /u/neromonero on 2024-05-02 09:23:36.

Another flood attack? Or the original spammer consolidating the funds?

Mempool is flooded with 150/2 transactions (about 100+ kB each). A only a couple of them is filling up entire blocks.

Interestingly, the “spammer” is paying 20 um/kB fee. However, these transactions are getting verified faster (for profitability reasons).

edit: These “big” spam txs are currently in the mempool (at the time of writing this). Tx verification will be slow for general users. This is an excellent stress test for the dynamic block size.

edit (Thu May 02 08:24:46 2024 UTC): the mempool is now flooeded with both 1/2 and 150/2 transactions. so, maybe consolidating the funds and restarting the spam?

edit (Thu May 02 08:59:50 2024 UTC): the later 150/2 txs are paying 82 um/kB fee. The attacker probably forgot to manually set fee rather than let the wallet software set it automatically :)

edit (Thu May 02 09:04:53 2024 UTC): There are floods of smaller txs paying 82 um/kB, probably the same “spammer”

edit (Thu May 02 12:56:02 2024 UTC): The oldest txs in mempool is 7.5 hours old. There are also some new mid-weight (20-50 in, 2 out) transactions. If you want to check out for yourselves, go to tx.town or

edit (Thu May 02 13:05:39 2024 UTC): There’s also an uptick of 1/2 (1000+ in mempool atm) and 2/2 (450+ atm) txs. Theory: the spammer consolidating the funds with big txs, then spamming again with 1/2 txs.

edit (Thu May 02 14:07:27 2024 UTC): Mempool count is currently 1987 (17709.66 kB), whereas it was around 80+ MB when the big txs first appeared. 1/2 tx count exceeds 1200, 2/2 is 400+. There seems to be a variety of fee rate, meaning the updated wallets (v0.18.3.3) are increasing the fees automatically.