M-PESA Tips
http://www.safaricom.co.ke/index.php?id=274
It has come to our attention that there is communication circulating highlighting an alleged case of M-PESA Customer Fraud. We wish to reassure you that Safaricom investigates all reported cases of fraud or attempted fraud on the network; and our dedicated Fraud team works together with the relevant authorities to seek legal address where appropriate.

Fraudsters are known to use tactics that take advantage of customers; they require you to provide information or do something yourself. To avoid being party to any frauds or scams on M-PESA, please take note of the following:
http://www.safaricom.co.ke/index.php?id=274