The summary provides an overview of key trends in cybersecurity threats according to Symantec's June 2015 Intelligence Report. There was a decrease in email-based threats like spam, phishing, and malware. However, new malware variants increased significantly to over 57 million in June. Ransomware and crypto-ransomware attacks also rose after declining in previous months. The manufacturing industry remained the top target of spear-phishing while small companies received the most phishing attempts. Transportation saw the highest rate of email-based malware.

1. SYMANTEC INTELLIGENCE REPORT
JUNE 2015

2. 2 | June 2015
Symantec Intelligence Report
3 Summary
4 June in Numbers
5 Targeted Attacks & Phishing
5 Top 10 Industries Targeted in Spear-Phishing Attacks
5 Spear-Phishing Attacks by Size of Targeted Organization
6 Phishing Rate
6 Proportion of Email Traffic Identified as Phishing by Industry Sector
7 Proportion of Email Traffic Identified as Phishing by Organization Size
8 Vulnerabilities
8 Total Number of Vulnerabilities
8 Zero-Day Vulnerabilities
9 Vulnerabilities Disclosed in Industrial Control Systems
10 Malware
10 New Malware Variants
10 Top 10 Mac OSX Malware Blocked on OSX Endpoints
11 Ransomware Over Time
11 Crypto-Ransomware Over Time
12 Proportion of Email Traffic in Which Malware Was Detected
12 Percent of Email Malware as URL vs. Attachment by Month
13 Proportion of Email Traffic Identified as Malicious by Industry Sector
13 Proportion of Email Traffic Identified as
Malicious by Organization Size
14 Mobile & Social Media
14 Android Mobile Malware Families by Month
14 New Android Variants per Family by Month
15 Social Media
16 Spam
16 Overall Email Spam Rate
16 Proportion of Email Traffic Identified as Spam by Industry Sector
17 Proportion of Email Traffic Identified as Spam by Organization Size
18 About Symantec
18 More Information
Welcome to the June edition of the Symantec
Intelligence report. Symantec Intelligence aims
to provide the latest analysis of cyber security
threats, trends, and insights concerning malware,
spam, and other potentially harmful business
risks.
Symantec has established the most comprehensive
source of Internet threat data in the world through
the Symantec™ Global Intelligence Network,
which is made up of more than 57.6 million attack
sensors and records thousands of events per
second. This network monitors threat activity
in over 157 countries and territories through a
combination of Symantec products and services
such as Symantec DeepSight™ Intelligence,
Symantec™ Managed Security Services, Norton™
consumer products, and other third-party data
sources.

3. 3 | June 2015
Symantec Intelligence Report
Summary
There is good news this month on the email-based front of the threat landscape. According
to our metrics, the overall spam rate has dropped to 49.7 percent. This is the first time this
rate has fallen below 50 percent of email for over a decade. The last time Symantec recorded
a similar spam rate was clear back in September of 2003.
Phishing rates and email-based malware were also down this month. However, there were
57.6 million new malware variants created in June, up from 44.5 million pieces of malware
created in May and 29.2 million in April. This increase in activity lends more evidence to the
idea that, with the continued drops in email-based malicious activity, attackers are simply
moving to other areas of the threat landscape.
Ransomware attacks are up in June, with over 477,000 detected during the month. While
still below the levels seen at the end of 2014, this is the second month in a row ransomware
attacks have increased since they reached a 12-month low in April. Crypto-ransomware is
also up in June, reaching the highest levels seen since December 2014.
In other news, after a busy month in May targeted attacks against the Manufacturing
industry leveled out in June, dropping from 41 percent to 22 percent. Manufacturing still
comes out on top in terms of sectors subject to targeted attacks, but activity is now in line
with what is being seen in the Finance, Insurance, & Real Estate sector and the Services –
Professional sector, which come in at second and third place.
We hope that you enjoy this month’s report and feel free to contact us with any comments or
feedback.
Ben Nahorney, Cyber Security Threat Analyst
symantec_intelligence@symantec.com

4. 4 | June 2015
Symantec Intelligence Report
JUNEINNUMBERS

5. 5 | June 2015
Symantec Intelligence Report
The Manufacturing sector
was targeted with the greatest
volume of spear-phishing
attacks in June, as 22 percent
were directed at manufacturing
organizations.
Top 10 Industries Targeted in Spear-Phishing Attacks
Source: Symantec
Mining
Retail
Nonclassifiable Establishments
Construction
Wholesale
Services - Non Traditional
Transportation, Communications,
Electric, Gas, Sanitary Services
Services - Professional
Finance, Insurance, Real Estate
Manufacturing
22%
41
15
17
17
12
5
9
6
8
8
7
9
2
2
2
2
1
2
1
June May
Top 10 Industries Targeted in Spear-Phishing Attacks
Large enterprises were the target
of 25.1 percent of spear-phishing
attacks in June, down from 39.2
percent in May. In contrast, 38.1
percent of attacks were directed
at organizations with less than
250 employees.
Company Size June May
1-250 38.1% 42.5%
251-500 15.2% 5.1%
501-1000 9.0% 6.6%
1001-1500 9.9% 2.7%
1501-2500 2.7% 3.9%
2501+ 25.1% 39.2%
Spear-Phishing Attacks by Size of Targeted Organization
Source: Symantec
Spear-Phishing Attacks by Size of Targeted Organization
Targeted Attacks Phishing

6. 6 | June 2015
Symantec Intelligence Report
Phishing Rate Inverse Graph: Smaller Number = Greater Risk
Source: Symantec
400
800
1200
1600
2000
2400
2800
JMAMFJ
2015
DNOSAJ
1IN
2448
1290
1587
2041
1610
1517
1004
1465
2666
2057
1865
647
Phishing Rate
The overall phishing rate has
decreased slightly this month,
where one in 2,448 emails was a
phishing attempt.
Industry June May
Agriculture, Forestry, Fishing 1 in 1,469.9 1 in 856.0
Public Administration 1 in 2,367.3 1 in 1,289.3
Services - Professional 1 in 2,750.3 1 in 1,762.2
Nonclassifiable Establishments 1 in 2,753.1 1 in 1,834.9
Finance, Insurance Real Estate 1 in 2,901.7 1 in 1,349.9
Construction 1 in 3,003.1 1 in 2,124.9
Mining 1 in 3,120.1 1 in 2,230.6
Services - Non Traditional 1 in 3,977.5 1 in 2,408.2
Wholesale 1 in 4,142.5 1 in 2,878.2
Transportation, Communications,
Electric, Gas, Sanitary Services
1 in 4,495.4 1 in 2,840.2
Proportion of Email Traffic Identified as Phishing
by Industry Sector
Source: Symantec.cloud
Proportion of Email Traffic Identified as Phishing by Industry Sector
The Agriculture, Forestry,
Fishing sector was once again the
most targeted Industry overall
for phishing attempts in June,
where phishing comprised one in
every 1,470 emails. This rate was
higher than any other industry in
either May or June.

7. 7 | June 2015
Symantec Intelligence Report
Company Size June May
1–250 1 in 1,552.5 1 in 1,473.9
251–500 1 in 2,553.7 1 in 1,629.5
501–1000 1 in 3,051.4 1 in 1,940.9
1001–1500 1 in 3,443.2 1 in 1,988.9
1501–2500 1 in 3,552.6 1 in 2,032.8
2501+ 1 in 3,624.5 1 in 2,280.8
Proportion of Email Traffic Identified as Phishing
by Organization Size
Source: Symantec.cloud
Proportion of Email Traffic Identified as Phishing by Organization Size
Small companies with less than
250 employees were again the
most targeted organization size
in June.

8. 8 | June 2015
Symantec Intelligence Report
The number of vulnerabilities
declined in June, down from 579
in May to 526 vulnerabilities
reported during the month.
Total Number of Vulnerabilities
Source: Symantec
100
200
300
400
500
600
700
JMAMFJ
2015
DNOSAJ
526
575
399
600 596
428
562
471 469
540
579
457
Total Number of Vulnerabilities
Vulnerabilities
Zero-Day Vulnerabilities
There was a one zero-day
vulnerability discovered in May,
the Adobe Flash Player CVE-
2015-3113 Unspecified Heap
Buffer Overflow Vulnerability.
Zero-Day Vulnerabilities
Source: Symantec
0
1
2
3
JMAMFJ
2015
DNOSAJ
1
0 0 0
2
1
2
1 1
0
1
0

9. 9 | June 2015
Symantec Intelligence Report
Vulnerabilities Disclosed in Industrial Control Systems
Source: Symantec
0
2
4
6
8
10
12
JMAMFJ
2015
DNOSAJ
0
2
4
6
8
10
12
JMAMFJ
2015
DNOSAJ
2
10
2 2
11111 1
Vulnerabilities
Unique Vendors
While two vulnerabilities in
industrial control systems were
reported by one vendor in April,
none were reported in May or
June.
Vulnerabilities Disclosed in Industrial Control Systems
Methodology
In some cases the details of a vulnerability are not publicly disclosed during the same month that it
was initially discovered. In these cases, our vulnerability metics are updated to reflect the time that
the vulnerability was discovered, as opposed to the month it was disclosed. This can cause fluctua-
tions in the numbers reported for previous months when a new report is released.

10. 10 | June 2015
Symantec Intelligence Report
New Malware Variants
OSX.RSPlug.A continues to be
the most commonly seen OS X
threat seen on OS X endpoints in
June, up 5.6 percentage points
from May.
Rank Malware Name
June
Percentage
Malware Name
May
Percentage
1 OSX.RSPlug.A 29.5% OSX.RSPlug.A 23.9%
2 OSX.Keylogger 11.6% OSX.Keylogger 14.0%
3 OSX.Klog.A 8.9% OSX.Wirelurker 9.0%
4 OSX.Luaddit 7.8% OSX.Luaddit 8.3%
5 OSX.Wirelurker 7.1% OSX.Klog.A 8.0%
6 OSX.Flashback.K 5.4% OSX.Flashback.K 6.4%
7 OSX.Stealbit.B 4.3% OSX.Netweird 3.9%
8 OSX.Freezer 3.2% OSX.Sabpab 3.8%
9 OSX.Netweird 2.9% OSX.Stealbit.B 3.6%
10 OSX.Okaz 2.5% OSX.Flashback 3.0%
Top 10 Mac OS X Malware Blocked on OS X Endpoints
Source: Symantec
Top 10 Mac OSX Malware Blocked on OSX Endpoints
Malware
New Malware Variants
Source: Symantec
JMAMFJ
2015
DNOSAJ
57.6
28.2
31.7
26.6
35.9
44.7
33.7
26.5
35.8
29.2
44.5
63.6
MILLIONS
There were more than 57.6
million new pieces of malware
created in June, up from 44.5
million created in May.

11. 11 | June 2015
Symantec Intelligence Report
Crypto-Ransomware Over Time
Crypto-ransomware was also up
duing June, reaching its highest
levels since December of 2014.
Ransomware Over Time
Ransomware attacks were up in
June for the second month in a
row, where over 477 thousand
attacks were detected.
Ransomware Over Time
Source: Symantec
100
200
300
400
500
600
700
800
JMAMFJ
2015
DNOSAJ
477
673 669
734
693
756
399
544
354
248
297
738
THOUSANDS
Crypto-Ransomware Over Time
Source: Symantec
10
20
30
40
50
60
70
80
JMAMFJ
2015
DNOSAJ
31
43
46
62
72
36
20
28
21 23
16
48
THOUSANDS

12. 12 | June 2015
Symantec Intelligence Report
Proportion of Email Traffic in Which Malware Was Detected
The proportion of email traffic
containing malware decreased
again this month, down from one
in 207 emails in May to one in
319 emails in June.
100
150
200
250
300
350
400
JMAMFJ
2015
DNOSAJ
1IN
Proportion of Email Traffic in Which Malware Was Detected
Source: Symantec
Inverse Graph: Smaller Number = Greater Risk
319
351
270
351
329
195
207
237
274
246
207
246
Percent of Email Malware as URL vs. Attachment by Month
The percentage of email malware
that contains a URL remained low
in June, hovering around three
percent.
Percent of Email Malware as URL vs. Attachment by Month
Source: Symantec
10
20
30
40
50
JMAMFJ
2015
DNOSAJ
3
8
3
6
7
14
5
3
8
3 3
41

13. 13 | June 2015
Symantec Intelligence Report
Industry June May
Transportation, Communications,
Electric, Gas, Sanitary Services
1 in 230.2 1 in 305.5
Agriculture, Forestry, Fishing 1 in 231.6 1 in 175.3
Public Administration 1 in 245.9 1 in 150.4
Services - Professional 1 in 296.7 1 in 164.5
Wholesale 1 in 301.6 1 in 157.7
Construction 1 in 305.8 1 in 240.9
Services - Non Traditional 1 in 365.3 1 in 236.6
Mining 1 in 371.5 1 in 325.8
Finance, Insurance, Real Estate 1 in 481.5 1 in 292.8
Nonclassifiable Establishments 1 in 497.7 1 in 255.9
Proportion of Email Traffic Identified as Malicious
by Industry Sector
Source: Symantec.cloud
Proportion of Email Traffic Identified as Malicious by Industry Sector
The Transportation,
Communications, Electric, Gas,
Sanitary Services sector was
the most targeted industry in
June, with one in 230 emails
containing malware.
Company Size June May
1-250 1 in 255.6 1 in 141.3
251-500 1 in 232.9 1 in 159.5
501-1000 1 in 318.1 1 in 221.3
1001-1500 1 in 292.2 1 in 205.0
1501-2500 1 in 164.0 1 in 264.6
2501+ 1 in 472.4 1 in 303.6
Proportion of Email Traffic Identified as Malicious
by Organization Size
Source: Symantec.cloud
Proportion of Email Traffic Identified as Malicious by Organization Size
Organizations with 1501-2500
employees were most likely to be
targeted by malicious email in
the month of June, where one in
164 emails contained malware.

14. 14 | June 2015
Symantec Intelligence Report
Mobile Social Media
1
2
3
4
5
6
7
8
9
JMAMFJ
2015
DNOSAJ
Android Mobile Malware Families by Month
Source: Symantec
1
4
2
3
5
6
3
0
3
1
2
8
In June there was one new
mobile malware familiy
discovered.
Android Mobile Malware Families by Month
There was an average of 40
Android malware variants per
family in the month of in June.
10
20
30
40
50
JMAMFJ
2015
DNOSAJ
New Android Variants per Family by Month
Source: Symantec
40
34 34 33
37
36
38 38 38 39 39
36
New Android Variants per Family by Month

15. 15 | June 2015
Symantec Intelligence Report
Last 12 Months
Social Media
Source: Symantec
0
20
40
60
80
100
Comment
Jacking
Fake
Apps
LikejackingFake
Offering
Manual
Sharing
5
83
11
0.11.4
Manual Sharing – These rely on victims to actually do the work of sharing
the scam by presenting them with intriguing videos, fake offers or messages that they share
with their friends.
Fake Offering – These scams invite social network users to join a fake event or group
with incentives such as free gift cards. Joining often requires the user to share
credentials with the attacker or send a text to a premium rate number.
Likejacking – Using fake “Like” buttons, attackers trick users into clicking website
buttons that install malware and may post updates on a user’s newsfeed, spreading the attack.
Fake Apps – Users are invited to subscribe to an application that appears to be
integrated for use with a social network, but is not as described and may be used to steal
credentials or harvest other personal data.
Comment Jacking – This attack is similar to the Like jacking where the attacker tricks the
user into submitting a comment about a link or site, which will then be posted to his/her wall.
Social Media
In the last twelve months, 83
percent of social media threats
required end users to propagate
them.
Fake offerings comprised 11
percent of social media threats.

16. 16 | June 2015
Symantec Intelligence Report
50 51 5249.7%
-1.8% pts
51.5%
-0.6% pts
52.1%
June May April
Overall Email Spam Rate
Source: Symantec
Overall Email Spam Rate
The overall email spam rate
further declined in June,
dropping below 50 percent, to
49.7 percent.
Spam
Industry May April
Mining 56.1% 55.4%
Manufacturing 53.7% 53.7%
Construction 53.3% 54.1%
Retail 53.1% 52.1%
Services - Non Traditional 53.0% 51.6%
Services - Professional 52.6% 52.5%
Agriculture, Forestry, Fishing 52.3% 52.3%
Public Administration 52.3% 51.4%
Wholesale 52.2% 52.1%
Finance, Insurance, Real Estate 51.9% 51.7%
Proportion of Email Traffic Identified as Spam by Industry Sector
Source: Symantec.cloudProportion of Email Traffic Identified as Spam by Industry Sector
At over 56 percent, the Mining
sector had the highest spam
rate again during June. The
Manufacturing sector came in
second with 54 percent.

17. 17 | June 2015
Symantec Intelligence Report
Company Size May April
1–250 52.8% 52.7%
251–500 53.2% 52.6%
501–1000 52.4% 52.0%
1001–1500 51.9% 52.2%
1501–2500 52.1% 52.2%
2501+ 52.3% 52.2%
Proportion of Email Traffic Identified as Spam by Organization Size
Source: Symantec.cloud
Proportion of Email Traffic Identified as Spam by Organization Size
While all organization sizes had
around a 52-53 percent spam
rate, organizations with 251-500
employees had the highest rate
at 53.2 percent.

18. 18 | June 2015
Symantec Intelligence Report
About Symantec
More Information
Symantec Worldwide: http://www.symantec.com/
ISTR and Symantec Intelligence Resources: http://www.symantec.com/threatreport/
Symantec Security Response: http://www.symantec.com/security_response/
Norton Threat Explorer: http://us.norton.com/security_response/threatexplorer/
Norton Cybercrime Index: http://us.norton.com/cybercrimeindex/
Symantec Corporation (NASDAQ: SYMC) is an information protection expert that helps people,
businesses and governments seeking the freedom to unlock the opportunities technology brings
– anytime, anywhere. Founded in April 1982, Symantec, a Fortune 500 company, operating one of
the largest global data-intelligence networks, has provided leading security, backup and availability
solutions for where vital information is stored, accessed and shared. The company’s more than 20,000
employees reside in more than 50 countries. Ninety-nine percent of Fortune 500 companies are
Symantec customers. In fiscal 2014, it recorded revenues of $6.7 billion. To learn more go to
www.symantec.com or connect with Symantec at: go.symantec.com/socialmedia.

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