Google finds erased text

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this google search:

http://www.google.com/search?hl=en&safe=off&rls=com.microsoft%3aen-us&q=%22memory+of+rita+ schwartz%22

for "memory of rita schwartz" returns document in phrase found not readable human eyes. apparently, google has way of reading , showing hidden text in search results. should google doing this? did attempt delete "memory of rita schwartz" , acrobat did insecurely?

> did attempt delete "memory of rita schwartz" , acrobat did insecurely?

the user didn't use redaction tool. he/she puts image on text.


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