- Mar 11, 2000
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Where I live, it's free to send SMSs if both users are on the same carrier, otherwise there is a charge (approx. US$ 0.065 per text).
The good thing about messaging apps like iMessage is it made the carriers here rethink their messaging plans. We used to pay 25 cents (!) per text and sometimes more for MMS, if we weren't on messaging plans. Now for my provider, all the in-market plans are unlimited SMS and MMS for both domestic and international messages, send and receive.
One specific advantage of iMessage over MMS is that MMS always reduces the image size to send. However, I usually don't send full-sized pix anyway. I consider that rude for some people when using iMessage, because it eats into their data plan. If you only have 200 MB, it doesn't make sense to send them 5 MB images, and not everyone has the foresight to turn off iMessage over cellular. MMS also requires data service, but MMS doesn't count toward your data plan.
BTW, one company is now claiming that iMessage accounts for nearly 1/3rd of mobile spam.
Wired: Apple’s iMessage Is Being Taken Over by Spammers
A year ago, Tom Landesman—who works for security and anti-spam company Cloudmark—had never seen an iMessage spam. But he and his company now say that, thanks to one particularly aggressive campaign from a junk mailer, it accounts for more than 30 percent of all mobile spam messages.
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Apple’s iMessage system spans across the iPad, iPhone, and Apple’s laptop and desktop systems. That fusion of the desktop and mobile world makes it particularly easy for scammers to write a Mac OS script that can send messages to all types of devices just as fast as Apple will allow. “It’s almost like a spammer’s dream,” says Landesman. “With four lines of code, using Apple scripts, you can tell your Mac machine to send message to whoever they want.”
Most of the time, the spammer will need a phone number to deliver the iMessage spam, but if you’ve added your email address to iMessage, the spammers can get you using that address too. (On your phone, you can see which addresses and phone numbers are associated with your iMessage account by visiting: Settings –> Messages –> Send and Receive),
Apple’s desktop client instantly tells you whether or not the number you’ve entered is registered with the iMessage network, so scammers could use this feature to generate a list of verified iMessages users. As an added bonus, iMessage notifies the scammer whether the message they’ve sent out has been read or not.
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A year ago, Apple didn’t appear to limit the velocity at which its users could pump out iMessages. In fact, hackers devised ways of spamming their victims with rapid-fire iMessage attacks that overwhelmed the iMessage app. Now, the company has added rate-limiting to the iMessage network, Landesman says. And there’s also a slightly burdensome way to report iMessage spammers and get them banned from Apple’s network. You have to email the company a screenshot of the spam, the phone number or email address of the spammer, and the date and time it was sent.
But if Apple is doing anything to take these spammers off the network, it’s moving slowly. WIRED reported one spam address to Apple on Wednesday of last week. As of Monday afternoon, it was still active on the iMessage network. We also checked three other email addresses used in spam campaigns over the past few days. They were all still active too. The spammers, by the way, did not respond to our iMessage requests for interviews.
As for the beleaguered users, there’s not much they can do. They can report the spam, or in extreme cases, turn off the iMessage service altogether (Settings –> Messages –> iMessage). One other option: You can turn off alerts from iMessage users who aren’t in your list of contacts (Settings –>Notification Center –> Messages –> Show Alerts from My Contacts).
