Buckingham Palace officials have confirmed a major cybersecurity upgrade will go ahead as the threat from Russia operating in the 'grey zone' grows, three years after the Royal Family website was targeted As the threat from Russia grows in the 'grey zone', Palace bosses are making vital improvements to cybersecurity systems. Key points and original sources are listed below.

• Buckingham Palace officials have confirmed a major cybersecurity upgrade will go ahead as the threat from Russia operating in the 'grey zone' grows, three years after the Royal Family website was targetedS1

• As the threat from Russia grows in the 'grey zone', Palace bosses are making vital improvements to cybersecurity systems.S2