Businesses in food and parcel delivery often rely on large numbers of gig-economy workers.
The UK's data watchdog found some of these workers are propositioning customers.
"People have the right to order a pizza [...] without then being asked for sex," a watchdog said.
A growing number of firms, particularly in delivery, transport, or logistics, rely on gig economy or contract workers.
One consequence is that sensitive customer information, such as phone numbers and addresses, is accessible to casual workers.
Persons:
Emily Keaney, Keaney
Organizations:
Service, ICO, Etihad Airways, Guardian
Locations:
Wall, Silicon, London