Crypto Flexs
  • DIRECTORY
  • CRYPTO
    • ETHEREUM
    • BITCOIN
    • ALTCOIN
  • BLOCKCHAIN
  • EXCHANGE
  • ADOPTION
  • TRADING
  • HACKING
  • SLOT
  • TRADE
Crypto Flexs
  • DIRECTORY
  • CRYPTO
    • ETHEREUM
    • BITCOIN
    • ALTCOIN
  • BLOCKCHAIN
  • EXCHANGE
  • ADOPTION
  • TRADING
  • HACKING
  • SLOT
  • TRADE
Crypto Flexs
Home»ETHEREUM NEWS»Deal Spam Attacks: Next Steps
ETHEREUM NEWS

Deal Spam Attacks: Next Steps

By Crypto FlexsApril 4, 20243 Mins Read
Facebook Twitter Pinterest LinkedIn Tumblr Email
Deal Spam Attacks: Next Steps
Share
Facebook Twitter LinkedIn Pinterest Email

Today the network was hit by a transaction spam attack that repeatedly called the EXTCODESIZE opcode (see trace sample). here), the ~50,000 disk fetches required to process a transaction result in blocks that take up to 20-60 seconds to validate. As a result, the block generation rate was reduced by a factor of 2-3 during the attack. There were no consensus failures (e.g. network forks) and neither the network nor its clients were completely disrupted at any point. The attacks have since largely stopped and the network is currently recovering.

A short-term solution is for users, including miners, enterprise users (including exchanges), and individuals, to run geth using the flag.

–cache 1024 –targetgaslimit 1500000 –gasprice 20000000000

Or parity with flags:

–cache-size-db 1024 –gas-floor-target 1500000 –gasprice 20000000000 –gas-cap 1500000

This (i) reduces the number of disk reads a node must perform by increasing the cache size, and (ii) reduces the maximum processing time of a block by a similar factor by lowering the gas limit by ~3x.

In the medium term (e.g. a few days to a week), we are actively working on a number of fixes to the Go client that could provide more reliable solutions to current issues and mitigate the risk of similar attacks. These include:

  • If the miner encounters a block taking more than 5 seconds to process, we will make a change to the miner software that automatically reduces the gas limit target by a factor of 2 temporarily, allowing a similar adjustment to what was adjusted today to occur automatically (see here For pull requests, this is a minor strategy change and not a soft fork or hard fork.)
  • Numerical adjustments to cache settings
  • Add additional cache
  • Added additional cache specifically for EXTCODESIZE (since the contract being read is ~18KB long, EXTCODESIZE reads are likely to be several orders of magnitude slower than other IO-heavy operations)
  • An on-disk cache that can store state values ​​more quickly, e.g. O(log(n)) speedup) accessed

We are also exploring options to replace the leveldb database with a more performant and optimized database for our use cases, but that change will not be happening anytime soon. The Parity team is working on performance improvements ourselves.

In the long term, there are also low-level protocol changes that can be explored. For example, it may be wise to add a feature to Metropolis that increases the gas cost of opcodes that require read operations, such as reading account status (SLOAD, EXTCODESIZE, CALL, etc.), especially reading external accounts. It may seem like just increasing the gas cost of all these operations to at least 500 would be sufficient, but care must be taken to avoid breaking any existing contracts (e.g. implementing them simultaneously). EIP 90 will be sufficient).

This sets a much lower cap on the maximum number of bytes a transaction can read, increasing safety against all potential attacks of this kind and reducing the size of the Merkle proof, improving security for both light clients and sharding. effect. Currently we are focused on more immediate software level changes. However, in the long term, such proposals should be discussed and contract developers should be aware that these kinds of changes may occur.


Share. Facebook Twitter Pinterest LinkedIn Tumblr Email

Related Posts

Checkpoint #4: Berlinterop | Ether Leeum Foundation Blog

June 28, 2025

Crypto Scam Markets thrives again after attempting to clean up Telegram.

June 24, 2025

Bitcoin is more than $ 104K as the merchant’s eyes move from H2 to $ 145,000.

June 20, 2025
Add A Comment

Comments are closed.

Recent Posts

What should I do with encryption?

June 30, 2025

AAS Miner Will Become The Top Free Cloud Mining Platform For Passive Income From Mining Cryptocurrencies Such As BTC And ETH In 2025

June 30, 2025

Bitcoin is integrated into less than $ 108,000, but the eyes are set for $ 115,000.

June 29, 2025

Etherrium price behavior is weakened-danger of short-term modifications

June 29, 2025

Last Opportunity-The bonus stage of the light chain AI begins after closing all 15 pre-sales stages.

June 29, 2025

Its Important To Know What’s Really Going On?

June 29, 2025

Elon Musk, SpaceX And Crypto Hype: What’s Really Going On?

June 28, 2025

Checkpoint #4: Berlinterop | Ether Leeum Foundation Blog

June 28, 2025

TRON Price Propects USDT supply exceeded $ 80 billion

June 28, 2025

Stablecoin startups surpass 2021 venture capital peaks as institutional money spills.

June 28, 2025

No Altcoin Season 2025 ? Why Bitcoin Dominance Is Holding Strong In The Crypto Market

June 28, 2025

Crypto Flexs is a Professional Cryptocurrency News Platform. Here we will provide you only interesting content, which you will like very much. We’re dedicated to providing you the best of Cryptocurrency. We hope you enjoy our Cryptocurrency News as much as we enjoy offering them to you.

Contact Us : Partner(@)Cryptoflexs.com

Top Insights

What should I do with encryption?

June 30, 2025

AAS Miner Will Become The Top Free Cloud Mining Platform For Passive Income From Mining Cryptocurrencies Such As BTC And ETH In 2025

June 30, 2025

Bitcoin is integrated into less than $ 108,000, but the eyes are set for $ 115,000.

June 29, 2025
Most Popular

Ethereum trading volume surges 85%, but ETH lags behind. What is happening?

November 24, 2024

World’s largest bank ICBC praises evolution of Bitcoin and Ethereum as innovative financial assets

June 11, 2024

Swarm Proof-of-Concept Release 3 Announced

March 9, 2024
  • Home
  • About Us
  • Contact Us
  • Disclaimer
  • Privacy Policy
  • Terms and Conditions
© 2025 Crypto Flexs

Type above and press Enter to search. Press Esc to cancel.