# Gavin Andresen
# 2012-03-10 15:13:37
# https://bitcointalk.org/index.php?topic=68128.msg794061#msg794061

There have already been several "transaction spam" attacks; as already pointed out, transaction fees keep them from being a big problem. @p{par}

The code also limits the number of free transactions that are relayed across the network, so you can't flood the network with transactions that will never get mined. @p{par}

Smarter denial-of-service attack prevention code has been a major unseen feature of the last couple Bitcoin releases. @p{brk}