# Search Engine OSINT

### Search Engine Operators

Search engine OSINT is a collection of techniques that use search strings and operators to refine search queries. There are numerous useful operators that can be used to search for specific information about a site, domain, or company. These operators will differ for various search engines, the examples below apply specifically to Google.

* **AND** includes all specified keywords in query (cyber AND war)
* **OR** searches for the presence of one keyword or another (cyber OR war)
* **" "** searches for a specific pattern of words
* **Site** limits searches to a single domain. `site:Microsoft.com`
* **Filetype** limits searches to a specified file type. `site:Microsoft.com filetype:php`
  * You can also exclude specific file types using `site:Microsoft.com -filetype:html` 
* **Ext** is useful to identify which programming languages are used on the site. `site:Microsoft.com ext:jsp, ext:cfm, ext:pl`
* **Intext** identifies pages with specific terms in the content of the page `intext:"term to search for"`
* **Intitle** identifies pages with specific titles or content. `site:Microsoft.com intitle:"index of"` or `"parent directory"`
* **Inurl** searches for specific terms in a URL `inurl:"keyword`
* **Cache** searches Google's cached pages. `cache:Microsoft.com`
* Limit search to a single domain `site:Microsoft.com`
* Filter specific subdomains `site:Microsoft.com -site:www.microsoft.com`
* Filetype: limits search results to a specified file type `site:domain.com -filetype:html`
* Ext: useful for discerning programming languages used `ext:jsp, ext:cfm, ext:pl`
* Intitle: can help identify pages with specific titles or content `Intitle:”index of" "parent directory"`

### Important links

* Google hacking database: <https://www.exploit-db.com/google-hacking-database>
* Google -  <https://www.google.com/>
* Google Advanced Search -  <https://www.google.com/advanced_search>
* Google Search Guide -  <http://www.googleguide.com/print/adv_op_ref.pdf>
* Bing -  <https://www.bing.com/>
* Yandex -  <https://yandex.com/>
* DuckDuckGo -  <https://duckduckgo.com/>
* DuckDuckGo Search Guide -  <https://help.duckduckgo.com/duckduckgo-help-pages/results/syntax/>
* Baidu - [http://www.baidu.com/](https://www.baidu.com/)