Hi, be careful with remote RPCs.
The use of RPCs is indeed critical for web3 and blockchain developers for state observation and interaction with the blockchain.
Hosting your own node can be costly and time-consuming, so the use of third-party RPC providers becomes a practical solution.
It's essential, though, to ensure data integrity and security when relying on these external services.
For example, GetBlock.io periodically produces testnet blocks instead of mainnet.
1) At first, they respond with a 404 Error to requests
2) Later (next request), they send a response with a testnet block instead of mainnet block
Where 0x2121c19 and 0x58a057779ff907d3987c595e801c11bd1067c0fe7485492396176b75eaf7a291 is testnet block
It's critical to implement additional validations and checks when observing blocks to ensure the integrity of the data and the correct functioning of your software. You should validate chainId in getBlockByNumber response.
(dump)
The use of RPCs is indeed critical for web3 and blockchain developers for state observation and interaction with the blockchain.
Hosting your own node can be costly and time-consuming, so the use of third-party RPC providers becomes a practical solution.
It's essential, though, to ensure data integrity and security when relying on these external services.
For example, GetBlock.io periodically produces testnet blocks instead of mainnet.
1) At first, they respond with a 404 Error to requests
POST /API-KEY/mainnet HTTP/1.1
…
{"jsonrpc":"2.0","method":"eth_getBlockByNumber","params":["latest",false],"id":111973596}
HTTP/1.1 404 Not Found
…
2) Later (next request), they send a response with a testnet block instead of mainnet block
POST /API-KEY/mainnet HTTP/1.1
…
{"jsonrpc":"2.0","method":"eth_getBlockByNumber","params":["latest",false],"id":111973597}
HTTP/1.1 200 OK
…
{"jsonrpc":"2.0","id":111973597,"result":{…"hash":"0x58a057779ff907d3987c595e801c11bd1067c0fe7485492396176b75eaf7a291",…,"number":"0x2121c19",…}
Where 0x2121c19 and 0x58a057779ff907d3987c595e801c11bd1067c0fe7485492396176b75eaf7a291 is testnet block
It's critical to implement additional validations and checks when observing blocks to ensure the integrity of the data and the correct functioning of your software. You should validate chainId in getBlockByNumber response.
(dump)
Stranger, wanna know how to earn?
Okta report unauthorized Access to Okta's Support Case Management System.
1) 2023-09-29,2023-09-02,2023-10-12 private reports — time to sell!
2) 2023-10-20 public report — time to buy!
SO, YOUR WAY TO EARN IS JUST TO GET THE INSIGHTS FIRST!
(report)
Okta report unauthorized Access to Okta's Support Case Management System.
1) 2023-09-29,2023-09-02,2023-10-12 private reports — time to sell!
2) 2023-10-20 public report — time to buy!
SO, YOUR WAY TO EARN IS JUST TO GET THE INSIGHTS FIRST!
(report)
Forwarded from Pavel Durov
To celebrate our new feature, I’m hosting a giveaway of 10,000 Telegram Premium subscriptions
In a week, 10,000 random subscribers of my channel will receive a Telegram Premium subscription for 6 months
I have already prepaid for this giveaway on Fragment with $200,000-worth of
Toncoin I bought on a cryptoexchange. Enjoy!
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Forwarded from Dev Meme / devmeme
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I know what to do for New Year
Omegle Was Forced to Shut Down by a Lawsuit From a Sexual Abuse Survivor.
“Of all tyrannies, a tyranny sincerely exercised for the good of its victims may be the most oppressive. It would be better to live under robber barons than under omnipotent moral busybodies. The robber baron's cruelty may sometimes sleep, his cupidity may at some point be satiated; but those who torment us for our own good will torment us without end for they do so with the approval of their own conscience.” — C.S. Lewis
(source)
“Of all tyrannies, a tyranny sincerely exercised for the good of its victims may be the most oppressive. It would be better to live under robber barons than under omnipotent moral busybodies. The robber baron's cruelty may sometimes sleep, his cupidity may at some point be satiated; but those who torment us for our own good will torment us without end for they do so with the approval of their own conscience.” — C.S. Lewis
(source)
Passive SSH Key Compromise via Lattices
Researchers found that someone just watching the network could grab secret keys from an SSH server if there's a mistake made while the server is making a digital signature. Before, people thought this couldn't happen with SSH because the signature used secret stuff that outsiders shouldn't be able to see. But the researchers figured out a way to get back the secret key if there's a hiccup during signature making. They also checked how safe SSH, IKEv1, and IKEv2 protocols are in this situation and found hundreds of keys that could be at risk because of this problem in different versions.
(work, news)
Researchers found that someone just watching the network could grab secret keys from an SSH server if there's a mistake made while the server is making a digital signature. Before, people thought this couldn't happen with SSH because the signature used secret stuff that outsiders shouldn't be able to see. But the researchers figured out a way to get back the secret key if there's a hiccup during signature making. They also checked how safe SSH, IKEv1, and IKEv2 protocols are in this situation and found hundreds of keys that could be at risk because of this problem in different versions.
(work, news)
Forwarded from Segment@tion fault
- а как ты дебажишь Rust в проде?
- я заливаю специальную сборку
- что за сборка? ты же не просто обложил её принтами?
- ...
- я заливаю специальную сборку
- что за сборка? ты же не просто обложил её принтами?
- ...
🥳🎉 Celebrating 1700000000 Seconds of Unix Time! 🕒🎊
On Tue Nov 14 2023 22:13:20 GMT+0000, the Unix timestamp will reach 1700000000. This is a noteworthy milestone, illustrating how these timestamps can serve as markers in time, helping to track events, record data, and synchronize systems across different geographical locations.
Unix timestamp, commonly known as POSIX time or Epoch time, is a system for tracking time in computing. It represents the number of seconds that have elapsed since the Unix Epoch, excluding leap seconds. The Unix Epoch is the time 00:00:00 UTC on 1 January 1970.
For beginners, understanding Unix timestamp is crucial in programming and system administration. This time representation is widely used in various operating systems, file formats, and systems that require a standard time format.
The significance of Unix timestamp lies in its simplicity and universality. It's a straightforward way of representing time that bypasses the complexities of time zones, daylight saving changes, and calendar variations. It's essentially a large integer that can be easily manipulated and converted into more human-readable forms using various programming languages.
On Tue Nov 14 2023 22:13:20 GMT+0000, the Unix timestamp will reach 1700000000. This is a noteworthy milestone, illustrating how these timestamps can serve as markers in time, helping to track events, record data, and synchronize systems across different geographical locations.
Unix timestamp, commonly known as POSIX time or Epoch time, is a system for tracking time in computing. It represents the number of seconds that have elapsed since the Unix Epoch, excluding leap seconds. The Unix Epoch is the time 00:00:00 UTC on 1 January 1970.
For beginners, understanding Unix timestamp is crucial in programming and system administration. This time representation is widely used in various operating systems, file formats, and systems that require a standard time format.
The significance of Unix timestamp lies in its simplicity and universality. It's a straightforward way of representing time that bypasses the complexities of time zones, daylight saving changes, and calendar variations. It's essentially a large integer that can be easily manipulated and converted into more human-readable forms using various programming languages.
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YAY UK 2023 Winner - Best Animation, Age 15-18 By Euan Garbut, Age 16, Glasgow (source)