MikeMirzayanov's blog

By MikeMirzayanov, 11 months ago, In English,

Hello.

As I wrote into a comment, last round we are faced with a strong DDOS-attack which ruined the competition. I don't know who did it, I also don't know reasons to do it. I'm very upset about the situation and ready to make an effort to be prepared for such issues.

I spend a lot of time to be ready for such incidents.

Here are steps you need to do to be ready for unexpected failures:

  • Join our telegram channel by the link https://t.me/codeforces_official to read urgent news.
  • Be sure that you know the password of your Codeforces account. If you don't remember it, just use the password recovery feature. Please, do it right now.
  • I've implemented a minimalistic website for replacing the main site in case of emergencies. Now you can only read problems, view your submissions (without any details), submit codes. Probably, later I'll add some more features, but anyway, the minimalistic version will have only vital features to take part in a contest. I've deployed it in several places, you can visit any of them by the links: http://m1.codeforces.com, http://m2.codeforces.com, http://m3.codeforces.com. If any of them is unavailable, just use another. Do not use them if the main website is alive.

UPD: Now you can enter minimalistic websites without a password. In this case, an email with a secret enter link will be sent to you.

 
 
 
 
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11 months ago, # |
  Vote: I like it +93 Vote: I do not like it

thank you

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11 months ago, # |
Rev. 2   Vote: I like it +16 Vote: I do not like it

came to give div2 after a long time. All the best! guys.

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11 months ago, # |
  Vote: I like it -19 Vote: I do not like it

Great!

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11 months ago, # |
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My username and passsord does not let me login to m1.codeforces.com :(

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11 months ago, # |
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Great!

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11 months ago, # |
  Vote: I like it +45 Vote: I do not like it

Thanks Dad

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11 months ago, # |
  Vote: I like it +3 Vote: I do not like it

My username/password don't work on the minimalistic sites. I just logged into the main site as well. Am I missing something?

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11 months ago, # |
  Vote: I like it +7 Vote: I do not like it

k

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11 months ago, # |
  Vote: I like it +20 Vote: I do not like it

No wonder it was really strange just now.. I can't submit my code.. Well, don't be upset, we all will support codeforces WHENEVER.

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11 months ago, # |
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I am just watching how fast this post is getting upvotes .. :D

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11 months ago, # |
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What is DDOS?

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11 months ago, # |
  Vote: I like it +6 Vote: I do not like it

little students ddosing cf triggered

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11 months ago, # |
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Login not working on minimal sites. Saying, Invalid handleOrEmail/email or password.

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11 months ago, # |
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Thanks

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11 months ago, # |
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Great! Thank you very much.

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11 months ago, # |
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Hard work much appreciated. (Y)

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11 months ago, # |
  Vote: I like it +18 Vote: I do not like it

this is why codeforces is great.

have a solution for every problem.

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    11 months ago, # ^ |
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    LooOoOoOOoOOoL. Solution to every problem? What about solving the problems with cheaters?

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      11 months ago, # ^ |
      Rev. 2   Vote: I like it +59 Vote: I do not like it

      You are right. Codeforces is not great because it don't have any solution to stop you from LooOoOoOOoOOoL LMAO everyone.

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11 months ago, # |
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Thank you

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11 months ago, # |
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That's awesome :) Thanks for your work.

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11 months ago, # |
  Vote: I like it +86 Vote: I do not like it

What doesn't kill us makes us stronger!

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    11 months ago, # ^ |
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    isn't it linkin park's Sharp edges ?

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    11 months ago, # ^ |
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    Mind boundary conditions. How limbs amputation and random lobotomy would make you stronger?

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11 months ago, # |
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I could not log in in the m2 site with the email but the user handle worked fine, fyi.

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11 months ago, # |
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I have logged in successfully, but I can't enter the contest

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11 months ago, # |
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It is really good, thank you very much!!!

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11 months ago, # |
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Login works good.

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11 months ago, # |
  Vote: I like it +27 Vote: I do not like it

MikeMirzayanov Does hacking work in these sites?

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11 months ago, # |
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Can I help in security Issues ?

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11 months ago, # |
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GREAT!!!

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11 months ago, # |
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what should I do if I am logged with VK(so I have no password)?

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11 months ago, # |
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Можно на русском?

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11 months ago, # |
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I used to use gmail login, just changed password and it says "Invalid handleOrEmail/email or password" on the back up website :/

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11 months ago, # |
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MikeMirzayanov, I'm just asking, have you ever considered some protections like cloudflare for Ddos attacks?

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11 months ago, # |
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please donate me ^^

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11 months ago, # |
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The telegram link doesn't open on my phone. What should I do?

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11 months ago, # |
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Hackers VS Codeforces

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11 months ago, # |
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I was able to login with my username, but not with email.

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11 months ago, # |
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I am giving my password to those sites, but not getting logged in.

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11 months ago, # |
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Thank you for your great job.

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11 months ago, # |
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I don't understand the reason to ddos one of the best oj in the world. Shame on the one who did it.

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11 months ago, # |
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hope be will

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11 months ago, # |
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There is a reliable information that DDOS attack was organized by a Russian-speaking schoolboy (we don't publish his name), who was losing the TechnoCup Round 3, estimated that he has no chances to qualify to the next stage of TechnoCup and bought a DDOS attack to turn the site down and get one more chance in the additional round.

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    11 months ago, # ^ |
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    Good for him that Mike is probably not going to react or respond to any comments of Samarskie Trolli ever

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    11 months ago, # ^ |
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    No Mr duck, the DDOS attack was made by the organization, I'm trying to break the convergence to stop the organization ambitions

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    11 months ago, # ^ |
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    What if it was the author of codeforc.es?

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11 months ago, # |
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the hacker who did it must be failed in algorithms and data structures in college and hate them :D

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11 months ago, # |
Rev. 2   Vote: I like it +14 Vote: I do not like it

Hello, MikeMirzayanov. Don't you think it would be great to make this sites available during all contests, not just when there are problems, like today, when there is a competition, which is not available in m1.codeforces.com. It could help users with bad internet connection and as for me, I think I would use it to read statements and make submissions because as I see it works faster than main site.

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11 months ago, # |
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Be sure that you know the password of your Codeforces account. If you don't remember it, just use the password recovery feature. Please, do it right now.

I've implemented a minimalistic website for replacing the main site in case of emergencies.

There is an unreliable information that MikeMirzayanov's account was hacked.

`NEVER ENTER YOUR PASSWORDS YOU NUBS!`
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11 months ago, # |
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We all with you Mike

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11 months ago, # |
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Will this post be in Russian. I hope to it

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11 months ago, # |
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Thank you for the new system, there more faster loading conditions and sending solutions))

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11 months ago, # |
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Thank MikeMizayanov for your effort. I guess someone do it to avoid huge rating loss. hope my guess is not ture but if it is then it's a such shame for our sports programmer community that we have such a cheep mind between us.

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11 months ago, # |
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nuhappy。。。。。。。。

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11 months ago, # |
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Hello,It's Me :)

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11 months ago, # |
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I am Hacker!

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11 months ago, # |
  Vote: I like it +60 Vote: I do not like it

Thank MikeMirzayanov trying to protect our studying places. I experience the DDOS-attack last round.And last year someone attack an Chinese OJ --Universal OJ.These websites all help us to develop our program skills. It's so hard understand why the hacker do this.

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11 months ago, # |
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thanks CF! :)

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11 months ago, # |
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I have never give up.Thank you.

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11 months ago, # |
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Mike is the ultimate sysadmin https://xkcd.com/705/

We don't deserve you, Mike.

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11 months ago, # |
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We were together in good times and will be together in bad times.

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11 months ago, # |
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Thank you for your strive <3

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11 months ago, # |
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I am not familiar with all these attacks etc, but can these three mirrors be ddosed as well? If yes, is ddosing all four of them significantly harder than ddosing codeforces alone?

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    11 months ago, # ^ |
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    If it can serve more requests per second, it will be harder to DDOS = the DDOSer has to pay more, so it's a good deterrent. I don't know about the capabilities of those sites, but the number of issued requests when loading them is much smaller than for default CF (a good way to see requests is just throwing the site into archive.fo).

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11 months ago, # |
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very thanks!

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11 months ago, # |
  Vote: I like it -35 Vote: I do not like it

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11 months ago, # |
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Never give up and respect each other!!!

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11 months ago, # |
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I'm still logon in m1 after changing my password.

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11 months ago, # |
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Some people just do this because they can. I'm afraid creating m1, m2 and m3 won't solve the problem. The attacker only needs to add them into the attack target list to ruin them.

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11 months ago, # |
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the true hacker has come...Cool...

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11 months ago, # |
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Thank you!

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11 months ago, # |
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Is there any reason to show Please, read the post alert in groups with specific domain (even for users defined only for this domain)? Main site can be blocked by local network, so it will just create broken link.

Check https://example.contest.codeforces.com/

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11 months ago, # |
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thank you

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11 months ago, # |
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That green PopUp makes me nervous, I read the post about 10 times

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11 months ago, # |
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Thank u

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11 months ago, # |
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M2 and m3

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11 months ago, # |
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Thank you!

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11 months ago, # |
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thank you

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11 months ago, # |
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I dont see any tasks on any of theese websites when i login

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11 months ago, # |
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thanks

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11 months ago, # |
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Glad you guys are on it and making sure our contest no matter what division is safe and enjoyable for everyone competing.

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2 months ago, # |
  Vote: I like it +31 Vote: I do not like it

Now you can enter minimalistic websites without a password. In this case, an email with a secret enter link will be sent to you.

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2 weeks ago, # |
  Vote: I like it +8 Vote: I do not like it

ah sh*t , here we go again

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    2 weeks ago, # ^ |
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    Things are getting better, buddy.

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      2 weeks ago, # ^ |
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      yeah totally i was just joking i was participating in m2.codeforces which worked almost 95% of the time for me