The move is part of her wider crackdown on immigration.
Shabana Mahmood has condemned the “utterly unacceptable” number of migrants crossing the Channel after figures passed 30,000 in record time.
The newly appointed Home Secretary faced the scale of the crisis just 48 hours after replacing Yvette Cooper.
The record-breaking figures highlight why Sir Keir Starmer reshuffled the Home Office, with Labour trailing Reform UK by 10 points.
The milestone will fuel Nigel Farage’s push for power after his party conference in Birmingham.
On September 6, 1,097 migrants crossed in 17 boats, pushing this year’s total to 30,100.
Home Office data shows crossings are up 37% on 2024 and 2023. It is the earliest point in a year the 30,000 mark has been reached since records began in 2018.
Ms Mahmood said “vile people smugglers” are “wreaking havoc on our borders” and pledged a returns deal with France will reduce crossings.
This week, she will host the Five Eyes security alliance, the US, Australia, Canada and New Zealand, for talks on tackling people smuggling. Officials confirmed the agenda will also cover child sexual abuse online and synthetic opioids.
The move is part of her wider crackdown on immigration.
She is expected to announce plans to move asylum seekers from hotels into military barracks after protests over migration this summer.
Defence Secretary John Healey confirmed military planners are scoping potential sites.
Ms Mahmood, who was Justice Secretary before the reshuffle, said:
“Rebuilding our reputation on the world stage is how we tackle serious organised crime and secure our borders.
“We have already reset our relationship with the EU, struck a people-smuggling deal with the G7 and operationalised a first-of-its-kind returns agreement with France.
“Today, we will agree new measures to protect our borders with our Five Eyes partners, hitting people smugglers hard.
“The Five Eyes might be drawn from different corners of the globe, but we are united by our alliance.
“As the security threats we all face become more complex and span continents, we are stronger and safer together.”
The Labour reshuffle saw Ms Cooper moved to Foreign Secretary after Angela Rayner resigned over tax affairs.
Sir Keir hopes the changes will draw a line under the row and criticism of Labour’s handling of Channel crossings.
On her first full day, Shabana Mahmood met Sir Mark Rowley, head of Scotland Yard, for a briefing on Gaza protests in London.
She said: “Supporting Palestine and supporting a proscribed terrorist group are not the same thing. An honour to visit Sir Mark and the Metropolitan Police to see them at work policing protests.”
Police said nearly 900 people were arrested at the central London rally against the banning of Palestine Action as a terror group.