Assuming the accounting system this thing links with both does not protect from SQL injection attacks (many don’t, despite it being easy to protect against) and also has a table named “Bills” with a field named “amount”; what this would do is go through every single Bills record and half the value in the amount field. This would completely fuck the system, particularly when it came to billing and tax filing as the numbers for accounts billing and receivable wouldn’t even come close to matching each other. The accounting department would have a hell of a time fixing the damage.
Yup. Rand() chooses a random float value for each entry. By default I believe it’s anywhere between 0 and 1. So it may divide the first bill by .76, then the second by .23, then the third by 0.63, etc… So you’d end up with a completely garbage database because you can’t even undo it by multiplying all of the numbers by a set value.
Also, by dividing by a number between 0 and 1, you increase the amount it looks like it billed. So income will look like it’s higher than outgoing funds, which will raise suspicions of embezzlement. And if someone actually is embezzling, whatever accounting tricks they’ve been using to hide it might just stop working because everything might need to be examined with a fine tooth comb. “Oh, the billing numbers aren’t right, and also it turns out the invoice numbers aren’t right either. Billing issue was tracked to a hack, but what’s going on with these invoices?”
if you’re trying to be malicious, wouldn’t it be better to multiply by Rand() instead of divide by Rand()?
assuming there are a decent number of recorded sales, you’d end up seeing many of the calls to Rand() returning values very close to 0. so, if you’re dividing by those values, you’d end see lots of sales records reporting values in the thousands, millions, or even billions of dollars. i feel like that screams “software bug” more than anything. on the other hand, seeing lots of values multiplied by values close to 0 would certainly look weird, but it wouldn’t be as immediately suspicious.
(of course a better thing would just be to use Rand() on a range other than [0,1])
I imagine they could if they knew exactly what you did and when, but if it doesn’t get discovered until later and nobody knows what happened, it would probably be a bitch to figure out
It seems like it would be fairly easy to find. All you need to do is find out where the price drops massively, and work backwards from there, since it doesn’t change the code going forward.
Pretty sure it would be obvious to anyone working there that chicken tenders are $10 not $5. Even a quick glance at any single bill would show the issue.
Assuming the accounting system this thing links with both does not protect from SQL injection attacks (many don’t, despite it being easy to protect against) and also has a table named “Bills” with a field named “amount”; what this would do is go through every single Bills record and half the value in the amount field. This would completely fuck the system, particularly when it came to billing and tax filing as the numbers for accounts billing and receivable wouldn’t even come close to matching each other. The accounting department would have a hell of a time fixing the damage.
Need to throw a rand() in there to make it less easy to unfuck
In the amount/2 term?
Yup. Rand() chooses a random float value for each entry. By default I believe it’s anywhere between 0 and 1. So it may divide the first bill by .76, then the second by .23, then the third by 0.63, etc… So you’d end up with a completely garbage database because you can’t even undo it by multiplying all of the numbers by a set value.
Satan?
Also, by dividing by a number between 0 and 1, you increase the amount it looks like it billed. So income will look like it’s higher than outgoing funds, which will raise suspicions of embezzlement. And if someone actually is embezzling, whatever accounting tricks they’ve been using to hide it might just stop working because everything might need to be examined with a fine tooth comb. “Oh, the billing numbers aren’t right, and also it turns out the invoice numbers aren’t right either. Billing issue was tracked to a hack, but what’s going on with these invoices?”
if you’re trying to be malicious, wouldn’t it be better to multiply by
Rand()instead of divide byRand()?assuming there are a decent number of recorded sales, you’d end up seeing many of the calls to
Rand()returning values very close to0. so, if you’re dividing by those values, you’d end see lots of sales records reporting values in the thousands, millions, or even billions of dollars. i feel like that screams “software bug” more than anything. on the other hand, seeing lots of values multiplied by values close to 0 would certainly look weird, but it wouldn’t be as immediately suspicious.(of course a better thing would just be to use
Rand()on a range other than[0,1])Couldn’t they just *2 all the bills from before this was ran and straighten it out?
I imagine they could if they knew exactly what you did and when, but if it doesn’t get discovered until later and nobody knows what happened, it would probably be a bitch to figure out
It seems like it would be fairly easy to find. All you need to do is find out where the price drops massively, and work backwards from there, since it doesn’t change the code going forward.
Pretty sure it would be obvious to anyone working there that chicken tenders are $10 not $5. Even a quick glance at any single bill would show the issue.
EOM recon will be a bitch.