In 2008, for example, America's Congress passed the Genetic Information Nondiscrimination Act, banning the use of genetic information in job recruitment.

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ArmorGroup has admitted his screening was not completed in line with company procedures but also claimed Fitzsimons falsified information during the recruitment process.

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Sales and information technology employees are particular recruitment favorites.

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It believes their recruitment is becoming a device for companies to gain confidential information.

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Law enforcement departments and agencies have established Internet safety programs and relationships with community members and local organizations that can reach multiple audiences with critical information about the threat of online violent extremism and recruitment.

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Although firms have probably become more permissive since, a survey by Robert Half Technology, a recruitment agency, found in 2009 that more than half of chief information officers in America blocked the use of sites such as Facebook at work.

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"The modest increase in the apprenticeship rate is unlikely to negatively affect apprenticeship recruitment and of much greater importance is the raising of apprenticeships standards, better information and advice to students and ensuring that apprenticeships are truly employer-led and employer-driven, " the EEF said.

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In addition to this, internet giants such as Google and Facebook have vast amount of information and influence over their internet user base to allow them to create viable recruitment portals that can pose a serious threat to LinkedIn.

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