Hackers are categorized into the following classes:

* Black Hat Hackers (Crackers): These are persons who are computer specialists and use their hacking skills to carry out malicious attacks on information systems.
* Gray Hat Hackers: These are persons who sometimes do not break laws and help to defend a network, but sometimes act as Black Hat Hackers.
* White Hat Hackers (Ethical Hackers): These are persons who have excellent computer skills and use their knowledge to secure information systems.
* Security Providing Organizations:
Some organizations and communities also provide security to information systems.

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Critical SQL Injection in mail4U is a production of Bagan Cybertech

PlanetCreator has reported another critical SQL Injection (vulnerability) on mail4U is a production of Bagan Cybertech http://www.mail4u.com.mm/ SQL injection is a code injection technique that exploits a security vulnerability occurring

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Online Services

Gathering information: (set) http://www.subnetonline.com/ (set) http://ping.eu/ (ping, dns_tools, traceroute, web_tools) http://serversniff.net/ (DIG / nslookup, whois, traceroute) http://networking.ringofsaturn.com/Tools/ (whois, dns_tools, service_scan, traceroute) http://centralops.net/co/DomainDossier.aspx (whois, dns_tools, domain_search) http://www.whois.ws/ (whois, dns_tools) http://www.robtex.com/ (whois)

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DNS disaster: first attacks reported

The first attacks that are likely to have stemmed from a serious Domain Name System flaw have been reported. Dan Kaminsky (Credit: Kaminsky’s blog) The existence of the Domain Name

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