Centrul Profilaxia Timisoara

Centru medical Profilaxia, medicina muncii, vaccinari si dermatologie, Timisoara on Ghidul Medical.

Profilaxia: Centrul Medical Profilaxia Timisoara asigura vaccinari profilactice, eliberare certificat international vaccinare, tratamente cu vaccinuri, consultanta privind riscuri epidemiologice determinate de calatorii internationale, prevenirea infectiilor de spital, servicii medicina muncii, dermatologie si altele.

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Centrul Profilaxia Timisoara Centru medical Profilaxia, medicina muncii, vaccinari si dermatologie, Timisoara on Ghidul Medical. Profilaxia: Centrul Medical Profilaxia Timisoara asigura vaccinari profilactice, eliberare certificat international vaccinare, tratamente cu vaccinuri, consultanta pri ...

The Dark Side of Search Engine Optimization (SEO) Using CSS to hide spam links Passive malware, on page - off screen (OPOS) links, stealth dark links

The Dark Side of Search Engine Optimization (SEO): Using CSS to hide spam links

Passive malware, on page / off screen (OPOS) or stealth dark links, and how to avoid being abused by black hat optimization hackers

Excerpt: 
I have discovered by accident, during a routine page source check, some "alien" code lines. A mix of regular HTML links and a couple of lines of tracking Java script, placed in the php header, indicating that a black hat SEO hacker broke in. The hack was simple and efficient, using CSS to keep the links on the page and visible for search engines but off the screen and invisible to human users. A multiple search engines comparative search using goScout.com on this subject does offer information but not much comfort.
To test some of the web page link spam detection tools I could find I placed three spam links on the top middle and bottom of the test page but none was detected as potential spam (see the references section for links to some sites).

There was no noticeable difference between the hacked page and the regular page and the intrusion was not detected for months probably. The links were place on page but moved outside the screen or display area ("on page / off screen" placement or OPOS link). This is the HTML code of the hacked page
We decided to try to reproduce the hack on a test page, and sure enough we got a perfect on page / off screen (OPOS) "dark link", on the page at minus 650 pixels (-650px). No horizontal scroll bars, no sign of the text even if is fairly long.

This attack might explain why our site Ghidul Medical basically disappeared from Google index for a couple of months at the beginning of 2010

read the full article here:

Passive malware, on page / off screen (OPOS) or stealth dark links, and how to avoid being abused by black hat optimization hackers

by Octavian P Jurma
ProSD.com & MetaProductions.com
Optimizare Web Site

via prosd.com

Posted via Posterous email from infoPaginaThe Dark Side of Search Engine Optimization (SEO): Using CSS to hide spam links Passive malware, on page / off screen (OPOS) or stealth dark links, and how to avoid being abused by black hat optimization hackers Excerpt: I have discovered by accident, during a routine page source check, some "a ...

Some Warren Buffett Quotes and Sayings Useful for Network Marketing (MLM)

"It's better to hang out with people better than you. Pick out associates whose behavior is better than yours and you'll drift in that direction."

"Why not invest your assets in the companies you really like? As Mae West said, 'Too much of a good thing can be wonderful'."

"Of the billionaires I have known, money just brings out the basic traits in them. If they were jerks before they had money, they are simply jerks with a billion dollars."

"Price is what you pay. Value is what you get."

"Wall Street is the only place that people ride to in a Rolls Royce to get advice from those who take the subway."

 

 Warren Buffett Quotes and Sayings

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Warren Buffett on why a business that grows rapidly can be dangerous

The worst sort of business is one that grows rapidly, requires significant capital to engender the growth, and then earns little or no money. Think airlines. Here a durable competitive advantage has proven elusive ever since the days of the Wright Brothers. Indeed, if a farsighted capitalist had been present at Kitty Hawk, he would have done his successors a huge favor by shooting Orville down.

— Warren Buffett, annual letter to Berkshire Hathaway shareholders, February 2008.

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Cabinet Stomatologic Timisoara

Smileclinic este un Cabinet Stomatologic din Timisoara recomandat pentru servicii de somatologie si ortodontie de calitate

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Cabinet Stomatologic Timisoara: Recomandari cabinet stomatologic timisoara de calitate cabinet stomatologic timisoara gaseste cel mai bun cabinet sau specialist

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Aparat Dentar Fix

Un agregator al informatiilor despre "aparat dentar fix". Articole, stiri, pagini web relevante si altele pentru aparat dentar fix vor fi listate aici.

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