Shao Jun: With personal experience to say that the site was attacked the impact of SEO

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A few days ago Shao Jun Blog very "Lucky" has become the object of attack, resulting in the site the day before yesterday from 8 o'clock in the morning has been in an inaccessible state, through the space business query that the site suffered from DDoS attacks led to IP directly by the computer room for the removal process, followed by the contact million network technology customer service, The site has been unable to return to normal access because of the ongoing attack, and it was not until about nine o'clock that night that the attack was resumed, which was the worst blow to my independent blog since its inception.

Actually, my blog has been attacked before. Only the attack is not serious, but the exhaustion of server resources caused the site to shut down, and now it seems to be a DDoS attack, because I know little about the security of the network, so I am also ashamed of the sudden attack on the site is a bit overwhelmed at first , but I also in order not to affect the site SEO situation and pay attention to my blog friends can normally visit my site, I panic in the domain name resolution to another host, but received million network technology customer service phone said the attack has stopped space can restore access, but also let me escape this time the soul-stirring, because to Know my last backup of the data is two months ago, but also let me on the backup of my negligence a bit tangled, which also gave me a wake-up call for data backup, and the second day after the attack to restore the site Baidu Snapshot also failed to update, it seems to have been affected.

First look at the concept of DDoS attacks, DDoS full name is distributed denial of service (distributed Denial-of-service Attack), many Dos attack source together with a server to form a DDoS attack, Dos attack way there are many kinds of, The most basic Dos attack is the use of reasonable service requests to occupy too much service resources, so that the server can not handle legitimate user directives. This is the interpretation of Baidu Encyclopedia, another few days ago well-known it blog Moon Blog is also a DDoS attack caused by the lack of access, the two days also to return to normal, and moonlight blog should be used by the independent host, see the destructive DDoS attacks, At the same time, his blog Baidu snapshots also failed to update in time but stay on the day of the attack.

Then or back to the point, through several sites of their own site after the attack on the site in the SEO performance is also a simple summary, but also welcome to put forward different views and more performance.

1, Baidu snapshot stagnation. This is also the most direct performance of the most obvious and most rapid performance, whether the site because of the attack and not open or because the host itself caused by the problem of the site can not be accessed, it is easy to cause the site Baidu Snapshot does not update the situation.

2, the site keyword ranking decline. In the event that the site is inaccessible for up to 13 hours due to an attack, the next day the Baidu snapshot does not update, and then found that some of the keyword ranking dropped, some of the top three keywords such as SEO promotion and so on have dropped four or five nouns, although the ranking of these keywords on my site has little impact, And I've only made some simple links to the internal anchor text for these words, due to the weight of the main station and the main keyword rankings are relatively stable, so these related but the competition is not very big keywords can quickly get better rankings, and because the main keyword inside and outside the chain are done more temporarily has not declined, It remains to be seen whether the next few days will fall.

3, the impact of other forms of attack. In many attacks, the site is hanging horse or hung black chain is also a more common phenomenon, also listed as the category of Black Hat seo, I have had an industry site was hanging black chain caused the site was down right 3 months did not update Baidu snapshot, the contents of the update are also included, However, after this period of time due to the accumulation of a large number of included and outside the chain, in the site after the weight is also basically put out, so the black chain once detected by the search engine until the punishment, but also have unpredictable consequences, after all, is not so black chain can be found, this may be related to luck.

Because I blog after the attack I appropriate in the Micro-blog update several articles and do a few outside the chain to attract spiders crawling, so far the snapshot of the update and included speed is also basically back to normal, but those ranking declined when the key words will be restored for the time being is still unknown, but in the end to remind webmasters must do a good job of the site backup, Do not plan to inadvertently careless, once the site encountered a sudden situation need to prepare additional data, can be updated in time to the latest data can also minimize the impact.

For data backup I also regularly back to the local computer, but also uploaded to the free space for a time to only, is the so-called not afraid of 10,000 afraid of the case, early preparation also no bad.

Original article please indicate reproduced from guangzhou SEO Shao Jun Blog, this article address: http://www.xiaojunseo.com/seo-watch/web-attack.html