Amber Rudd has pledged to spend millions to provide guards for all Jewish schools, colleges, and nurseries and synagogues.
The Home Secretary said she was forced to act after receiving 924 reports of anti-Semitic incidents, including 86 violent assaults, last year.
Ms Rudd warned against the “increasingly sophisticated” tactics of far-right extremists in the wake of the murder of Labour MP Jo Cox.
She said that groups were becoming better at harnessing the use of social media for promoting their cause and hauling in new members.
Speaking at a UK-Israel conference in Parliament, Ms Rudd said she was clear “we can only effectively challenge hatred and division by working together – not just internationally but at home – Government, police, local people and organisations.
“And sadly the Jewish community knows all too well what it’s like to live with the threat from terrorism and hate crime.
“Last year, the Community Security Trust received 924 reports of anti-Semitic incidents, including 86 violent assaults. Let me be clear, any attack of that kind is one attack too many.
“We are providing £13.4million for guarding at all Jewish state, free and independent schools, colleges, and nurseries, and at synagogues, and to support the continuing efforts of the police to provide security and reassurance to the Jewish community.
“We take the security of the Jewish community seriously, and we will continue to put in place the strongest possible measures to ensure the safety of this community – and all other communities too.”