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A brief overview of SHA-1 certificate and why it will be removed soon
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A few weeks ago, Microsoft and Google announced they will no longer support sites that secure their traffic through SHA-1 certficate. This is as part of an Internet-wide campaign to dispose of weaker encryption, meaning Internet Explorer will stop displaying the lock icon on websites that depend on SHA-1 certificate. 

The letters SHA in SHA-1 stand for Secure Hash Algorithm. To put it simply, SHA-1 is a core component consisting of various technologies that are used to encrypt Internet data transmissions. Because SHA-1 has over the years become extremely weak in protecting online...

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