Sluggish economic growth will pose challenges for FirstRand, Standard Bank, Barclays Africa Group and Nedbank.
The thieves who stole millions of dollars from automatic teller machines across Japan are still at large.
Standard bank on Monday confirmed it had been affected by a massive credit card fraud scam involving South African banks in Japan.
Shares have gone up by 4.7% at R113.88, compared to a 0.9 percent decline in the JSE.
Customers were unable to make payments as the system was down for at least two hours.
The bank went offline earlier today affecting millions of customers who couldn't use services including ATMs.
The bank was offline for almost 2 hours with services including ATMs and online banking experiencing problems.
The SARB says it doesn't agree with Moody's downgrading of the country's top four banks.
The bank says bad debts ticked higher in the first few months of 2014, a sign SA borrowers are under pressure.
