SSDs are deleted differently than hard drives
Bonn / Hannover (dpa / tmn)-Anyone who sells or gives away SSDs or hard drives that are no longer needed should make sure there is no more data in it. This also applies if a desktop PC or laptop and drive are handed over.
Important information: The method of erasing drives with magnetic data storage (ie classic hard drives) is not suitable for the secure erasure of drives with storage chips (SSD). And: In any case, deleting data in the operating system or formatting the drive through the recycle bin is not enough.
On Ebay, SSDs with citizen data from the Coburg City Vehicle Registry and the Coburg District Youth Welfare Office were sold. As found in the professional magazine "c't" (Issue 1/20), the IT service provider responsible for replacing the SSD did not delete data from the drive professionally, but the authorities still issued the deletion certificate and SSD and then went online in the market Provided on.
However, how to properly delete the drive? The Federal Office for Information Security (BSI) explained that if a classic hard disk (HDD) that rotates a disk storage disk overwrites the HDD seven times, it can be erased with sufficient security using special programs such as DBAN. ).
This process is different for SSDs and drives that combine two storage technologies (SSHD). Here, the so-called secure erase command should be executed, which triggers the erase routine stored on the hard disk, which also includes a defective storage area. If using the secure erase function does not apply to the management program of the hard disk manufacturer, BSI recommends using the Parted Magic program as an alternative.
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Old hard drive: only destruction can ensure safety
According to Attingo Data Recovery, the physical destruction of a classic magnetic hard disk (HDD) does not necessarily require an external service provider: with a little tool, you can simply destroy the data carrier disk or "disk" (rotatably mounted disk), This makes it uneconomical to perform professional data recovery. All in all, Attingo only sees one option for sensitive data: encrypt the data carrier from the beginning, then completely overwrite the data, and then perform professional data rescue or authentication on the deleted data. Apply physical damage.
Incredible data carrier destruction needs to be improved.
Not only the ministries, but also companies and private users are faced with the problem of system changes. This involves how old data carriers should be handled. These old data carriers often also contain incorrect data. Should come.
Attingo data recovery instructions :? The data saver works like an archaeologist in some ways: for them, it is not valuable at all, so that people will not do their best to save it. The hard drive and other data carriers are securely erased so that the data can no longer be reconstructed by professionals, so it cannot be ignored ※ In our digital world, there is hardly anything more dangerous than sensitive data. Houses are intact and may fall In the wrong hands.
A
large number of commercial deletion programs for software that is often insufficient for data destruction ensure complete deletion of the data carrier and no residual deletion. But, usually, unfortunately, this is just a promise, and less because of the (very good) different qualities of these programs, but because of the way hard drives and flash memory (such as SSDs, USB sticks and SD cards) are structured ※.
To understand why residue-free deletion is actually an "impossible thing," you must first understand how modern data carriers work. The main problems with data deletion are those areas that may fail during operation. Whenever a defect occurs in an area, it is separated and the data is copied to the replacement area. The system can no longer access these blocked areas-that is, it cannot access inappropriate removal software. However, the original data still exists and can then be read by professional data savers using special procedures. ? Taking into account the media with terabytes of storage space, the reserved area occupies several hundred MB, you can measure
Special problems with SSDs, USB memory sticks and SD cards SSDs, USB memory sticks and SD cards have a special problem because the original data of "Wear Balance" is always stored in different physical addresses. Flash memory has more spare memory than hard drives because the life span of each flash memory unit is relatively short.
The data will be distributed across the cells, so if possible, they all have the same number of write cycles. This avoids early failure of areas where frequent write accesses are made. Therefore, once the flash data medium is overwritten, all data will never be destroyed.
Data destruction: State requires coverage of all areas.
By the way, a misunderstanding that is often rumored is that repeated coverage makes erasing magnetic hard disks safer ※. This is based on decades of record design, "non-overlapping traces can still be used." For modern hard disks, the recording density has changed, so one overwrite is enough to prevent recovery of the overwritten sector.
The problem is not the frequency of data coverage, but whether it actually covers all areas. According to the credo of Nicolas Ehrschwendner, managing director of Attingo Datenrettung GmbH, once a single department is covered by data, it cannot be rebuilt.
Self-destruction is not always reliable Most modern data media have standardized self-destruction commands. "If you do this, the data carrier should completely destroy all data-including the reserved area." However, the problem is complicated:
Time and time again, the command is not executed correctly, or the data carrier has shown the first defect, so the self-destruction is incomplete. Similarly, according to Ehrschwendner, it is almost impossible for users to verify successful data destruction.
In addition to the software-based process, the relatively safe method of physical destruction can also "exercise a bit of brutal force" or be implemented with due care. According to these methods, the data carrier is not available and can no longer be used. "True heavy treasures" include shredding and grinding data carriers-one of the safest methods of data destruction: using hard drives, data sectors usually only occupy a few micrometers on the surface, so theoretically small fragments are used The scanning probe microscope can still be read. However, no data protector in the world can put this theory into practice. Due to the budget required for this long-term job, sometimes it sometimes fails.
SSDs and other flash memory data carriers consist of one or more flash memory chips. If mechanical data corruption occurs, all built-in flash memory chips (wafers) must be destroyed. ※ Here, the grain size during shredding should also be smaller than the minimum size of the wafer cast into the chip-the edge length is 1 mm The length should be small enough.
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How smart robot technology supports the pandemic
Artificial intelligence can help respond to the corona pandemic in many ways. The learning system platform displays on its website AI applications that have been used or can be used in the future. These include intelligent robots, which can alleviate the pressure on technical workers or lack them. Professor Dr. outlined the possibilities, limitations and future research areas. Dr. HC Frank Kirchner, Director of the Department of Robotics at the University of Bremen, and Scientific Director of the Robot Innovation Center at the DFKI Bremen Base. Does he lead the working group? Learning system platform.
Professor Kirchner, what are the basic advantages of artificial intelligence in the anti-corona pandemic?
AI provides various options for fighting epidemics. In the model calculation, the spread and development of the infection is obvious. Here, especially when predicting the usefulness of certain countermeasures (such as contact restrictions), you can use a learning system and reveal correlations that cannot be recognized by classical modeling methods. However, the prerequisite for this is to obtain comprehensive information about the movement and contact behavior of citizens and the demographic structure of certain parts of a country or city. This data is currently unavailable, and for data protection reasons, it may not be available in this large-scale format in the future. This reveals a dilemma that is particularly present in epidemics: on the one hand, dense and high-quality information is the decisive factor in narrowing the scope, on the other hand, this requirement can only be met by restricting or restricting personal privacy. From a scientific point of view, it can be seen that AI methods may be useful. However, their commitment or creation of necessary conditions is a political decision that scientists do not have to make. On the other hand, this requirement can only be met through restrictions or restrictions on personal privacy. From a scientific point of view, it can be seen that AI methods may be useful. However, their commitment or creation of necessary conditions is a political decision that scientists do not have to make. On the other hand, this requirement can only be met through restrictions or restrictions on personal privacy. From a scientific point of view, it can be seen that AI methods may be useful. However, their commitment or creation of necessary conditions is a political decision that scientists do not have to make.
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New security solution detects BIOS malware
With SafeBIOS Event and Attack Indicator (IoA) monitoring software, Dell Technologies has launched a monitoring tool that automatically detects malware in the Dell PC BIOS.
If the configuration change is identified as a threat, you can quickly locate the infected PC and isolate it. This is also possible during the ongoing attack. In addition to the antivirus program that is only active in the operating system, the SafeBIOS security solution is also used, so the system firmware cannot be accessed.
Since the firmware is not on the computer's hard disk, but in its own memory area, regular antivirus scanners cannot see its activity. The security software will not get stuck here anyway, because it has not been actively loaded when booting the system. If an attacker is now embedded in the firmware, it completely constitutes damage to the system. In general, malware that usually does not receive attention before the operating system is started can no longer be removed using standard methods. The attacker can then read the undetected data and penetrate deep into the corporate network.
Defensive measures are not only important in software
Endpoint Security, OSS product specialist at Dell Technologies Germany. "On the other hand, as far as hardware-level countermeasures are concerned, they are not or just not fully prepared for the worst-case scenario and therefore take unnecessary risks. Our new SafeBIOS security solution can help users discover the BIOS early And reliably supports boot-level exceptions. It also ensures excellent endpoint security. "
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Vital developments in energy-efficient digital drives
Researchers have built a breakthrough while in the advancement of the new generation of digital merchandise which will require significantly less electric power and less warmth.
It requires working with the sophisticated quantum qualities of electrons, in such cases the spin condition of the electron.
Earlier attempts have held the spin for less than a 2nd.
In electronics, capacitors shop electrical power as being a charge. A spin capacitor is actually a variant of the plan: it shops not just the demand but in addition the spin point out of the group of electrons-in actuality, it "freezes" the spin place of each and every electron.
The flexibility to capture spin states opens up the potential for producing new units which can retailer data efficiently, building storage products quite compact. Only one sq. inch of spin capacitor can shop 100 TB of information.
"This is a modest but essential breakthrough that would generate a revolution in electronics by leveraging the concepts of quantum technological innovation.
"Currently, up to 70% of the electrical power in electronic units which include desktops or mobile phones is missing during the variety of warmth, which happens to be the energy created with the circulation of electrons as a result of the device's circuits. This has prompted big inefficiencies and constrained latest know-how Operate and Sustainability. The carbon footprint of your Online is by now related to air journey and is raising calendar year by year.
"With the quantum impact of working with gentle and eco-friendly aspects, there is absolutely no warmth decline. Because of this the functionality of existing systems can proceed to evolve within a additional efficient and sustainable fashion, with considerably significantly less electrical power expected."
"Our investigate implies that potential devices might not should rely on difficult disks, but use light-operated spin capacitors, that can make them quite rapidly or be affected by an electric discipline, that can make them really power efficient.
How spin capacitors do the job
In conventional calculations, information is encoded and stored to be a series of bits: one example is, zeros and kinds over a hard disk. These zeros and types is often represented by the transform in polarity of small magnetized spots around the disk or saved around the tough disk.
Using quantum know-how, spin capacitors can use gentle or electrical fields to jot down and skim facts encoded as electron spin states.
The investigate crew was ready to develop spin capacitors through the use of a complicated content interface manufactured from a carbon known as magnetic manganese and cobalt magnetic electrodes. The interface amongst nano-carbon and oxide can seize the spin point out of the electron.
By using the conversation in between the carbon atoms in the buckyball along with the metallic oxide while in the existence on the magnetic electrode, the time needed for the spin state decay is prolonged.
Some of the world's most advanced experimental products was utilised as element of your investigation.
Scientists in Barcelona made use of the ALBA synchrotron, which employs an electron accelerator to crank out synchrotron light, enabling experts to visualize the atomic framework of make a difference and study its qualities. Lower electricity muon spin spectrometer from Paul Scherrer Insitute, Switzerland, is used to observe neighborhood spin alterations underneath light and electrical radiation in just 1 billionth of the meter inside a sample. Mesons are subatomic particles.
The outcome in the experimental assessment ended up stated with all the help of computer system scientists in the UK's Science and Know-how Services Council, one among the UK's most powerful supercomputers.
Researchers consider the development they can make might be developed, in particular products that may remain in rotation for very long amounts of time.
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External hard drive is at risk of crashing
If you want to record a program on a TV, you need an external hard drive. However, for some hard drives, data may be lost during USB recording. Background: External hard drives usually have very little power and will crash through the TV ’s USB port. test.de interviewed the five largest TV providers and provided tips on which storage media can be used to record TV programs without problems.
The USB connection did not
provide enough power to show the movie with the favorite actress on the TV, but there was no time to watch it. Football entered the final stage, but the bladder was under pressure. In order not to waste a minute, you need a TV with a recording function and an external hard drive. However, in practice, this combination usually causes problems: the TV ’s USB port is used as a connection to provide enough power to the hard disk, and the recording fails.
Panasonic, Philips and LG recommend the
top ten suppliers of F-Bang NF GR ?? TV-GER with driver power plug ? Ten questions asked how to fix it. Panasonic, TP Vison (Philips) and LG recommend using a hard drive with its own power supply for USB recording. Sony and market leader Samsung do not provide such references.
SSD storage is an
outlet that is not suitable for all devices . SSD storage (solid-state drives) can also be used instead of traditional HDD hard drives because SSD storage consumes less power than HDD disks. Not all providers recommend this. Although Samsung and TP Vision (Philips) believe that SSD storage is suitable, Sony recommends that only HDD hard drives be used for older models. Panasonic and LG do not recommend using SSD memory for recording, because they will be permanently written in the time-shifted TV, which may put a lot of pressure on the SSD.
The allowed storage size varies by provider.
The allowable storage size of the provider also varies. Philips (250 GB to 2 TB), Panasonic (160 GB to 3 TB), Sony (at least 32 GB) and LG (up to 2 TB) provide information about the size, Samsung does not.
Tip: Use an external hard drive with a separate power plug for TV recording. If in doubt, please ask the seller before buying. Specially advertise that certain hard disks are suitable for recording TV programs. If the recording fails, you can return the hard drive.
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