There was "no evidence" that customer passwords and credit card numbers have been stolen, the company said.
In addition, users were advised to "remain cautious of any unsolicited communications that ask for personal information or refer to a web page asking for personal information"; to "avoid clicking on links or downloading attachments from unfamiliar emails"; and to "continue to review bank account and credit card statements for suspicious activity".
Careem told customers in an email on Monday that it had "identified a cyber incident involving unauthorized access to the system we use to store data".
Implement good password management by updating their Careem password, as well as other accounts on which you use similar details.
There is no evidence that your password or credit card number have been compromised.
Careem, a ride-hailing service from Dubai that is operating in 13 countries within the Middle East, North Africa, and South Asia, announced that a data breach exposed the account information of 14 million drivers and riders.More news: Home Alone films are background radiation at Christmas time: Macaulay Culkin
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"We apologize for what has happened but rest assured, Careem has learned from this experience and will come out of it a stronger and more resilient organization". "Use a strong mix of characters, and try not to use the same password for multiple sites", the handout read.
Careem added that as online criminals' tactics continue to become more sophisticated, it is increasing online security efforts.
"Throughout the incident, our priority has been to protect the data and privacy of our customers and captains".
Disclosing details after three months is poor practice on part of Careem, showing a lack of compliance in reporting this hack promptly. "In absence of laws, companies can not be taken to task for compromise of confidential user data", an expert told Pakistan Today. Services remain in operation as Careem works with cybersecurity experts and law enforcement agencies on the matter, the company added.
Careem is one of just a few Gulf startups to be valued at $1 billion.
The Egyptian Cabinet sent the draft law to the House of Representatives on March 21 to be officially approved and ratified, only hours after the Cairo Administrative Court ordered the suspension of the two companies' licenses in Egypt. It competes with the industry's other ride-hailing giant Uber.